top dead center
Word Rarity
Uncommon
Frequency: Zipf frequency 4.81 in modern English
19
Scrabble Score
13
Letters
4
Syllables
9
Unique Chars
Meaning
noun
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.
Uncountable
noun
The reference mark on a flywheel (and engine block) indicating the engine is in this position, when aligned.
Uncountable