transmission
tranz-MISH-un
/trænzˈmɪʃ.ən/
The mechanism that transmits power from an engine to the wheels through a system of gear ratios.
In automotive terms, refers specifically to the gearbox (manual or automatic) that manages engine torque and speed.
The story behind the word. Formed from Latin 'transmittere' (to send across). The mechanical sense developed in the late 19th century as machinery required devices to 'transmit' rotational force from engine shafts to driving axles.
Word relationships
- gearbox: 'Gearbox' is preferred in British English, while 'transmission' is predominant in American English.
Commonly confused with
- clutch: The clutch engages and disengages power transfer, whereas the transmission contains the set of gears that modifies drive ratios.
Word family
- transmit (verb): to pass or send along
- transmissive (adjective): capable of transmitting
Collocations
- automatic transmission
- manual transmission
- transmission fluid
- transmission gears
Example sentences
- "Slipping gears and delayed shifting are clear indications that your transmission needs professional servicing." Vehicle mechanical repair
- "Modern cars often feature a continuous variable transmission to maximize fuel efficiency in urban traffic." Car buying specs
Memory hook
TRANS-MISSION has the MISSION to TRANS-fer engine power to the wheels. Transmits power from engine to wheels.
When not to use
Avoid confusing with radio signal transmission in non-mechanical contexts unless speaking figuratively.
Fun facts
- Automatic transmissions rely on hydraulic fluid pressures so complex that early repair manuals referred to their internal valve bodies as 'the brain unit.'
Explore more words
drivetrain, powertrain, Transmit, differential, Communicate, telemetry
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