top dead center

top dead cen·ter

T t

Definitions of top dead center words

noun top dead center Top dead center is the position of an engine's piston when it is at the very top of its stroke. 0
noun top dead center (automotive) A position in the four-stroke combustion process wherein the piston is at the topmost point in its stroke. This can either be during the compression phase or the combustion phase. 0
noun top dead center (automotive) The reference mark on a flywheel (and engine block) indicating the engine is in the top dead center position, when aligned. 0

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A common word. It’s meaning is known to most children of preschool age. About 95% of English native speakers know the meaning and use the word.

Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

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