- a transmission system in a motor vehicle, usually incorporating a fluid clutch, in which the gears change automatically
WordReference Random House Unabridged Dictionary of American English © 2026
automat′ic transmis′sion,
- Automotivean automotive transmission requiring either very little or no manual shifting of gears. Also called automatic, automatic drive.
- 1945–50
Collins Concise English Dictionary © HarperCollins Publishers::
automatic transmission n
'automatic transmission' also found in these entries (note: many are not synonyms or translations):