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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An automotive part that combines the transmission and the differential and is used on vehicles with front-wheel drive.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A single unit combining transmission gearbox, clutch, final drive, and differential are combined into a single unit connected directly to the driveshaft, used mostly in rear-engine cars.


trans(mission) + axle.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Blend of transmission and axle (Wiktionary)



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