Definition of Top dead center

1. Noun. (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''. ¹

2. Noun. (automotive) The reference mark on a flywheel (and engine block) indicating the engine is in the '''top dead center''' position, when aligned. ¹

¹ Source:

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Lexicographical Neighbors of Top Dead Center

top antiquark
top banana
top bananas
top billing
top boot
top copy
top dead center (current term)
top deck
top dog
top dogs
top dollar
top dollars
top drawer
top dressing
top edged
top edges
top edging
top executive
top fermentation
top fermenting yeast

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