[chas-ee, -is, shas-ee]
noun, plural chas·sis [chas-eez, shas-] /ˈtʃæs iz, ˈʃæs-/.
  1. Automotive. the frame, wheels, and machinery of a motor vehicle, on which the body is supported.
  2. Ordnance. the frame or railway on which a gun carriage moves backward and forward.
  3. the main landing gear of an aircraft; that portion of the landing gear that supports an aircraft.
  4. Radio and Television. a frame for mounting the circuit components of a radio or television set.
  5. a construction forming the sides, top, and bottom of a cabinet, showcase, or the like.

Origin of chassis

1655–65; < French châssis frame; akin to chase2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for chassis's


noun plural -sis (-sɪz)
  1. the steel frame, wheels, engine, and mechanical parts of a motor vehicle, to which the body is attached
  2. electronics a mounting for the circuit components of an electrical or electronic device, such as a radio or television
  3. the landing gear of an aircraft
  4. obsolete a wooden framework for a window, screen, etc
  5. the frame on which a cannon carriage moves backwards and forwards
  6. slang the body of a person, esp a woman

Word Origin for chassis

C17 (meaning: window frame): from French châssis frame, from Vulgar Latin capsicum (unattested), ultimately from Latin capsa case ²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for chassis's



"base frame of an automobile," 1903, American English; earlier "window frame" (1660s), from French châssis "frame," Old French chassiz (13c.) "frame, framework, setting," from chasse "case, box, eye socket, snail's shell, setting (of a jewel)," from Latin capsa "box, case;" see case (n.2) + French -is, collective suffix for a number of parts taken together. Cf. sash (n.2).

Online Etymology Dictionary, © 2010 Douglas Harper