bottom dead center

== English == === Noun === bottom dead center (uncountable) (mechanical) A position in the cycle of a piston engine wherein the piston is at the bottommost point in its stroke. In a four-stroke cycle, BDC occurs twice: at the end of the intake stroke and at the end of the power stroke. Synonym: BDC (initialism) Antonyms: top dead center, TDC Hypernym: dead center (mechanical) The reference mark on a flywheel (and engine block) indicating that the engine is in this position, when aligned. Synonym: BDC (initialism) Antonyms: top dead center, TDC Hypernym: dead center ==== Translations ====