AlegsaOnline.com Chassis Author: Leandro Alegsa 13-11-2022 A chassis (US: /ˈtʃæsi/, UK: /ˈʃæsi/; plural chassis /-iz/ from French châssis [ʃɑsi]) (plural chassis) consists of a framework that supports an inanimate (non-living) object. This is much like an animal's skeleton, for example in a car.