Dictionary

top dead center en · NOUN

Meanings

1. (uncountable) A position in the cycle of a piston engine wherein the piston is at the topmost point in its stroke. In a four-stroke cycle, TDC occurs twice: at the end of the compression stroke and at the end of the exhaust stroke.
2. (uncountable) The reference mark on a flywheel (and engine block) indicating the engine is in this position, when aligned.

Antonyms

bottom dead center · BDC · BDC · bottom dead center

Hypernyms

dead center · dead center

Synonyms

TDC · TDC

Translations (3)

es punto muerto superior (piston position) · fi yläkuolokohta (piston position) · ru ве́рхняя мёртвая то́чка (piston position)