The term, transverse means "side-to-side" as opposed to longitudinal which means "front-to-back".

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In automotive engineering, the term, 'transverse' refers to an engine in which the crankshaft is oriented side-to-side relative to the wheels of the vehicle. Most front wheel drive vehicles use this engine orientation, while most rear wheel drive vehicles use a front-to-back longitudinal arrangement.

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See also transverse wave, velocity, acceleration.