Search by letter: T
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Search by letter: T
- Theme (music): main melody, development, and distinctions Theme (music)
- Theme (narrative): meaning, types, and examples Theme (narrative)
- Theme Hospital (1997 video game) Theme Hospital
- Theme park (amusement park): design, types, history and importance Theme park
- Theme restaurant: concept, history, and notable examples Theme restaurant
- Themis — Titaness of Divine Law and Order Themis
- Themis (hypothetical moon of Saturn) Themis (hypothetical moon)
- Themisto — a small prograde moon of Jupiter Themisto (moon)
- Themistocles: Athenian naval strategist and leader in the Persian Wars Themistocles
- Themistocles Leftheris
- Thenailles: a commune in Aisne, northern France Thenailles
- Thenelles — commune in Aisne, northern France Thenelles
- Theneuille (Allier) — commune in central France Theneuille
- Theni: agricultural market town and district headquarters in Tamil Nadu Theni
- Theni district, Tamil Nadu Theni district
- Theo Adam: German operatic bass and celebrated interpreter of Wagner and Bach Theo Adam
- Theo Colborn — Pioneer in Endocrine Disruption Research Theo Colborn
- Theo James
- Theo Jörgensmann: German Jazz Clarinetist and Composer Theo Jörgensmann
- Theo Ratliff: American NBA center and defensive specialist Theo Ratliff
- Theo Saat (1928–2015) — Dutch Olympic sprinter Theo Saat
- Theo van Els — Dutch applied linguist and university rector Theo van Els
- Theo van Gogh — Dutch filmmaker, columnist and controversial public figure Theo van Gogh
- Theo van Gogh (art dealer)
- Théo van Rysselberghe
- Theo Waigel — German politician and former Federal Finance Minister Theo Waigel
- Theo Walcott
- Theo-Ben Gurirab: Namibian statesman, diplomat and parliamentary leader Theo-Ben Gurirab
- Theobald von Bethmann Hollweg: German Chancellor during World War I Theobald von Bethmann Hollweg
- Theobalds Grove railway station
- Theobroma — tropical genus that includes the cacao tree Theobroma
- Theobromine: chemistry, occurrence, effects, history, and safety Theobromine
- Theocracy — government by religious authority Theocracy
- Theocritus: Hellenistic Poet and Founder of Pastoral (Bucolic) Poetry Theocritus
- Theodemer (early Frankish ruler) Theodemer
- Theodicy: explanations and responses to the problem of evil Theodicy
- Theodicy of Disprivilege: Religious Justifications for Poverty and Marginalization Theodicy of disprivilege
- Theodor Bergmann (1916–2017) — German agronomist and scholar Theodor Bergmann
- Theodor Boveri: Pioneer of Cytology, Embryology, and Chromosome Theory Theodor Boveri
- Theodor Eicke: SS leader, Dachau commandant and Totenkopf division commander Theodor Eicke
- Theodor Fontane: German realist novelist, poet, and observer of society Theodor Fontane
- Theodor Herzl: founder of modern political Zionism and his legacy Theodor Herzl
- Theodor Heuss: liberal journalist and first president of West Germany Theodor Heuss
- Theodor Hoffmann: East German Admiral and Last Minister of National Defense Theodor Hoffmann
- Theodor Schwann: pioneer of cell theory and digestive enzyme research Theodor Schwann
- Theodor Stolojan: Romanian economist and former prime minister Theodor Stolojan
- Theodor "Turl" Wagner — Austrian striker and 1954 World Cup scorer Theodor Wagner
- Theodora Kroeber — Writer and Interpreter of Native Californian Cultures Theodora Kroeber
- Theodore Bikel
- Théodore Chassériau
- Theodore Edgar McCarrick
- Théodore Géricault
- Theodore Hesburgh: Catholic Priest, University Leader, and Public Servant Theodore Hesburgh
- Theodore J. Lowi: Scholar of American Public Policy and Political Institutions Theodore J. Lowi
- Theodore J. Sophocleus (1939–2018) — Maryland pharmacist and legislator Theodore J. Sophocleus
- Theodore 'Teddy' Long — American professional wrestling referee, manager and authority figure Theodore Long
- Theodore Miller Edison
- Theodore B. Olson Theodore Olson
- Theodore Roethke: life, themes and influence Theodore Roethke
- Theodore Roosevelt (1858–1919) Theodore Roosevelt
- Theodore Sturgeon American science fiction author
- Theodore Van Kirk — Navigator of the Enola Gay (1921–2014) Theodore Van Kirk
- Theodoric the Great: Ostrogothic King and Ruler of Italy Theodoric the Great
- Theodoros Angelopoulos — Greek filmmaker known for memory, history and long takes Theodoros Angelopoulos
- Theodoros Zagorakis — Greek midfielder and captain who led Greece to Euro 2004 Theodoros Zagorakis
- Theodosia Okoh: Designer of Ghana’s Flag, Educator and Sports Promoter Theodosia Okoh
- Theodosius Dobzhansky: genetics, evolution and the modern synthesis Theodosius Dobzhansky
- Theodosius I (Theodosius the Great): Roman Emperor, 379–395 Theodosius I
- Theogenes of Thasos: celebrated boxer and pankratiast of ancient Greece Theogenes
- Theogony: Hesiod's Account of the Origins and Genealogy of the Gods Theogony
- Theological noncognitivism: meaning, arguments, and distinctions Theological noncognitivism
- Theology — study, branches, history, and contemporary roles Theology
- Théophile Gautier: French poet, critic, and advocate of 'art for art's sake' Théophile Gautier
- Theophilus of Antioch (2nd-century bishop and apologist) Theophilus of Antioch
- Theophrastus: Greek Philosopher, Successor to Aristotle, and Early Botanist Theophrastus
- Theorem (mathematics): definition, proof methods, and importance Theorem
- Gauss's Theorema Egregium — the intrinsic curvature of surfaces Theorema egregium
- Theoren Fleury: Canadian NHL Right Winger, Author and Advocate Theoren Fleury
- Theoretical chemistry: principles, methods, and applications Theoretical chemistry
- Theoretical computer science: foundations, models, and applications Theoretical computer science
- Theoretical keys (music) Theoretical key
- Theoretical linguistics: structure, aims, and principal subfields Theoretical linguistics
- Theoretical particle particles that have been assumed or predicted to exist by scientists
- Theory of Colours (Goethe) Theory of Colours
- Theory of computation
- Unified physical theories: approaches to combining general relativity and quantum mechanics Theory of everything
- Theory of Forms (Platonic philosophy) Theory of forms
- Theory of Relativity
- Theory of the Earth — James Hutton and the origins of modern geology Theory of the Earth
- Theotokos — the title of Mary in Eastern Christianity Theotokos
- Théoule-sur-Mer — coastal commune in Alpes-Maritimes, France Théoule-sur-Mer
- Therapeutic index
- Therapsids: early synapsids ancestral to mammals Therapsid
- Therapy: medical and psychological treatments, types and uses Therapy
- Theravada: the early school of Buddhism and its traditions Theravada
- There Goes My Baby (Usher song, 2010) There Goes My Baby
- There You Go Again (political catchphrase) There you go again
- There's No Disgrace Like Home — The Simpsons (Season 1 Episode 4) There's No Disgrace Like Home
- There's Something About Mary — 1998 romantic comedy by the Farrelly brothers There's Something About Mary
- Theremin: The Early Touchless Electronic Musical Instrument Theremin
- Theresa May: British political leader and former Prime Minister Theresa May
- Theresa Randle
- Theresa Russell — American actress and film performer Theresa Russell
- Theresa Saldana: actress, survivor, and victims' rights advocate Theresa Saldana
- Theresa Villiers — British Conservative politician Theresa Villiers
- Theresa, New York
- Thérèse of Lisieux — Saint Thérèse of the Child Jesus (The 'Little Flower') Thérèse of Lisieux
- Theria — the live‑bearing subclass of mammals Theria
- Theridiidae — the tangle‑web or comb‑footed spiders Theridiidae
- Theriodont: mammal-like therapsids and the origins of mammals Theriodont
- Therizinosaur: the unusual clawed theropods adapted for herbivory Therizinosaur
- Therizinosaurus — the giant clawed maniraptoran of the Late Cretaceous Therizinosaurus
- Thermal conductivity: how materials transfer heat Thermal conductivity
- Thermal decomposition
- Thermal efficiency
- Thermal expansion: causes, coefficients, materials, and engineering implications Thermal expansion
- Thermal physics: an introduction to heat, entropy, and statistical behavior Thermal physics
- Thermal power plant — operation, components, history and uses Thermal power plant
- Thermal radiation: emission of heat as electromagnetic waves Thermal radiation
- Thermal resistance
- Thermidorian Reaction: end of the Reign of Terror and its political legacy Thermidorian Reaction
- Thermite and aluminothermic reactions Thermite
- Thermochemistry: energy and heat in chemical reactions and phase changes Thermochemistry
- Thermocouple: Principles, Types, and Applications Thermocouple
- Thermodynamic cycle: principles, types, and applications Thermodynamic cycle
- Thermodynamic Entropy: Definition, Meaning, and Applications Thermodynamic entropy
- Thermodynamic equilibrium
- Thermodynamic potentials: definitions, common forms, and applications Thermodynamic potential
- Thermodynamic state: definition, properties, and significance Thermodynamic state
- Thermodynamic system: definition, types, properties, and applications Thermodynamic system
- Thermodynamics: principles, laws, and applications Thermodynamics
- Thermometer: principles, types, history, and applications Thermometer
- Thermophile
- Thermoplastic
- Thermoregulation
- Thermosetting Polymer (Thermoset): Properties, Processing and Uses Thermosetting polymer
- Thermosphere — Earth's high-altitude, heat-absorbing atmospheric layer Thermosphere
- Thermostat: function, types, history and common applications Thermostat
- Therocephalia — extinct theriodonts bridging non-mammalian synapsids and mammals Therocephalia
- Theropod: bipedal saurischian dinosaurs and the evolutionary lineage of birds Theropod
- Thérouanne: historic commune in Pas-de-Calais, northern France Thérouanne
- Therwil: Municipality in Arlesheim District, Basel-Landschaft, Switzerland Therwil
- How to Use a Thesaurus: Finding Synonyms, Antonyms, and Usage Nuance Thesaurus
- Thescelosaurus: a late Cretaceous herbivore of North America Thescelosaurus
- These Are Special Times (Celine Dion album) These Are Special Times
- These Boots Are Made for Walkin' (song) These Boots Are Made for Walkin'
- These Words (song) These Words
- Theseus: Legendary Hero and King of Athens Theseus
- Thesh (Tjesh, Tesh) — Predynastic Egyptian ruler Thesh
- Academic Thesis: Purpose, Structure, and Typical Components Thesis
- Thesis statement: purpose, types, and how to write one Thesis statement
- Thespakusatsu Gunma
- Thespesius (extinct hadrosaur genus) Thespesius
- Thespis — the first Gilbert and Sullivan operetta Thespis
- Thessaloniki: Northern Greece's Port City and Cultural Center Thessaloniki
- Thessaly — central Greek region: geography, history and notable features Thessaly
- Theta: Greek letter, history, and scientific uses Theta
- Thetford, Norfolk Thetford
- Thetford Hoard: late Roman Romano-British treasure from Norfolk Thetford Hoard
- Thetis: Greek sea nymph, mother of Achilles Thetis
- Theux — municipality in Liège Province, Belgium Theux
- They (English pronoun and its uses) They
- They Don't Care About Us (song) They Don't Care About Us
- They Might Be Giants
- Theydon Bois: village and civil parish in Epping Forest, Essex Theydon Bois
- Theydon Garnon: small rural parish in Epping Forest, Essex Theydon Garnon
- Theydon Mount (village and civil parish) Theydon Mount
- Thézan-des-Corbières — commune in Aude, Occitanie, France Thézan-des-Corbières
- Thèze (Pyrénées-Atlantiques) — small commune in southwestern France Thèze, Pyrénées-Atlantiques
- Thézillieu — former commune in Ain, Auvergne-Rhône-Alpes Thézillieu
- Thiago Alcântara
- Thiago Motta
- Thiago Neves — Brazilian attacking midfielder and playmaker Thiago Neves
- Thial (thioaldehyde): structure, reactivity, synthesis and uses Thial
- Thiamine (Vitamin B1) Thiamine
- Thibodaux, Louisiana: parish seat, culture, and regional center Thibodaux, Louisiana
- Thích Quảng Độ: Vietnamese Buddhist leader and human rights advocate Thích Quảng Độ
- Thích Quảng Đức: Vietnamese monk whose 1963 self‑immolation drew global attention Thích Quảng Đức
- Thief (1981 film) Thief (movie)
- Thiel-sur-Acolin: a rural commune in Allier, central France Thiel-sur-Acolin
- Thielle-Wavre (former municipality in Neuchâtel, Switzerland) Thielle-Wavre
- Thielle — village in La Tène, canton of Neuchâtel, Switzerland Thielle, Switzerland
- Thiembronne — commune in Pas-de-Calais, northern France Thiembronne
- Thierachern — municipality in the district of Thun, Canton of Bern Thierachern
- Thiernu — commune in Aisne, northern France Thiernu
- Thierrens: former Vaud municipality and its merger into Montanaire Thierrens
- Thierry Baudet
- Thierry Henry — French forward, club star and coach Thierry Henry
- Thiers, Puy-de-Dôme
- Thierstein District (Canton of Solothurn, Switzerland) Thierstein District
- Thiéry (Alpes-Maritimes): a small mountain commune in Provence-Alpes-Côte d'Azur Thiéry, Alpes-Maritimes
- Thiesi — town and comune in the Province of Sassari, Sardinia Thiesi
- Thiệu Trị (Nguyễn Phúc Miên Tông), third emperor of the Nguyễn dynasty Thiệu Trị
- Thieves Like Us (1974 film) Thieves Like Us (movie)
- Thiéville — former commune in Calvados, Normandy Thiéville
- Thièvres (Pas-de-Calais) — commune in northern France Thièvres, Pas-de-Calais
- Thigh (anatomy and function) Thigh
- Thil (Ain) — commune in Auvergne‑Rhône‑Alpes, eastern France Thil, Ain
- Thilo Sarrazin: German economist, public official, and controversial author Thilo Sarrazin
- Thimble: Protective Finger Cap for Sewing, Craft, and Collecting Thimble
- Thimister-Clermont — municipality in Liège province, Belgium Thimister-Clermont
- Thimphu: capital and cultural heart of Bhutan Thimphu
- Thimphu District: Bhutan’s administrative and cultural heart Thimphu District
- Thin Film Transistor Liquid Crystal Display (TFT-LCD) Thin film transistor liquid crystal display
- Thin-layer chromatography (TLC): principles, procedure, and applications Thin layer chromatography
- Thin Lizzy — Irish hard rock band formed in Dublin Thin Lizzy
- Thing: meanings, history and cultural significance Thing
- The Thing (Ben Grimm) — Marvel Comics Superhero Thing (comics)
- Things Fall Apart — novel by Chinua Achebe Things Fall Apart
- Thinis (Tjenu): early capital and sacred centre of ancient Egypt Thinis
- “Think of the children”: a rhetorical appeal and its uses Think of the children
- Think of You (Usher song) Think of You
- Think tank: definition, roles, history and influence Think tank
- Thinker
- Thinkin Bout You — Frank Ocean song overview Thinkin Bout You
- Thinle Lhondup: Nepalese actor best known for Himalaya (Caravan) Thinle Lhondup
- Thinner (novel) Thinner
- Thioester
- Thioether (sulfide): structure, properties, and uses Thioether
- Thioketone (thione): the sulfur analogues of ketones Thioketone
- Thiol (mercaptan): structure, properties, reactions, and uses Thiol
- Thionne (Allier) — Commune in central France Thionne
- Thionville: Moselle city on the left bank of the river near Luxembourg and Germany Thionville
- Thiotrichales: an order of sulfur‑associated and diverse bacteria Thiotrichales
- Third Amendment to the United States Constitution
- Third baseman (baseball position) Third baseman
- Third Battle of Panipat (14 January 1761) Third Battle of Panipat
- Third Epistle of John
- Third Estate (Ancien Régime social class) Third Estate
- Third Fleet (Australia) — 1791 convict transports to New South Wales Third Fleet (Australia)
- Third Geneva Convention (Treatment of Prisoners of War) Third Geneva Convention
- Third law of thermodynamics
- Third Normal Form (3NF) in Relational Database Design Third normal form
- Third party: meaning, contexts, and common uses Third party
- Third party (politics)
- Third Party System (United States, c.1854–mid-1890s) Third Party System
- Third person
- Third Punic War (149–146 BC): Siege and destruction of Carthage Third Punic War
- Third rail (railway electrification conductor) Third rail
- Third Rutte cabinet (Netherlands, 2017–2022) Third Rutte cabinet
- Third Servile War (Spartacus: the Gladiator Revolt against Rome) Third Servile War
- Third sex and third gender: definitions, cultures, and contemporary recognition Third sex
- Third Treaty of San Ildefonso (1800) — Retrocession of Louisiana Third Treaty of San Ildefonso
- Third World: concept, history, and contemporary usage Third World
- Third-person shooter (video game genre) Third-person shooter
- Third-person view (video games) Third-person view
- Thiré, Vendée — Commune in Pays de la Loire, France Thiré
- Thirsk, North Yorkshire Thirsk
- Thirst: the body's signal to drink and stay hydrated Thirst
- Thirst (2009 film) Thirst (2009 movie)
- Thirteen Colonies of British North America Thirteen Colonies
- Thirteen Ghosts (2001 film) Thirteen Ghosts
- Thirteenth Amendment to the United States Constitution
- Thirty Years' War was fought from 1618 until 1648
- Thirty-fifth government of Israel (May 2020–June 2021) Thirty-fifth government of Israel
- Thirty-fourth government of Israel (2015–2020) Thirty-fourth government of Israel
- Thirty-Nine Articles of the Church of England Thirty-Nine Articles
- Thirumanam (Tamil television series) Thirumanam (TV series)
- Thirunageswaram: Temple Town near Kumbakonam Thirunageswaram
- Thirunallar: Pilgrimage town of Shani and Shiva in Karaikal, Puducherry Thirunallar
- Thirunallar Saniswaran Temple (Dharbaranyeswarar) — Overview and Significance Thirunallar Saniswaran temple
- Thiruvalangadu: Sacred Shaivite Village and Temple Near Chennai Thiruvalangadu
- Thiruvalluvar — Tamil poet-philosopher and author of the Thirukkural Thiruvalluvar
- Thiruvananthapuram (Trivandrum): capital and cultural hub of Kerala Thiruvananthapuram
- Thiruvananthapuram district — geography, history, and administration Thiruvananthapuram district
- Thiruvarur: historic temple town and cultural centre in Tamil Nadu Thiruvarur
- Thiruvarur district, Tamil Nadu: geography, history and culture Thiruvarur district
- This Ain't a Scene, It's an Arms Race (Fall Out Boy song) This Ain't a Scene, It's an Arms Race
- This City (Patrick Stump song) This City
- This Earth of Mankind
- This Hour Has 22 Minutes: Canadian satirical news and sketch show This Hour Has 22 Minutes
- This Is 40 (2012 film) This Is 40
- This Is a Long Drive for Someone with Nothing to Think About
- This Is How We Do (Katy Perry song) This Is How We Do
- This Is Me... Then (Jennifer Lopez album) This Is Me... Then
- This Is Not a Test! (Missy Elliott album) This Is Not a Test!
- This Is Spinal Tap
- This Is the Army (1943 film) This Is the Army
- This Is the End (2013 film) This Is the End
- This Is the Life (song)
- This Is the New Shit — Marilyn Manson song (2003) This Is the New Shit
- This Is What the Truth Feels Like
- This Is What You Came For — song by Calvin Harris featuring Rihanna This Is What You Came For
- This Is Your Life (UK TV series)
- This Land Is Your Land — Woody Guthrie's iconic American folk song This Land Is Your Land
- This Love (Maroon 5 song)
- This Love (The Veronicas song)
- This Means War (2012 film) This Means War
- This Morning (British daytime television programme) This Morning
- This Side of Paradise
- This Tuesday in Texas (WWF pay-per-view, 1991) This Tuesday in Texas
- This Used to Be My Playground — Madonna (1992 song) This Used to Be My Playground
- Thistle: prickly flowering plants in the daisy family Thistle
- Thistle tube (thistle funnel) — laboratory glassware Thistle tube
- Thita Rangsitpol Manitkul
- Thixotropy: time-dependent shear thinning in gels and fluids Thixotropy
- Thizy (Yonne) — commune in the Bourgogne-Franche-Comté region Thizy, Yonne
- Thnks fr th Mmrs — Fall Out Boy song Thnks fr th Mmrs
- Thoigné (Sarthe) — Commune in Pays de la Loire, France Thoigné
- Thoiré-sous-Contensor