top dead center love

top dead center


from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.
  • n. The reference mark on a flywheel (and engine block) indicating the engine is in the top dead center position, when aligned.


Sorry, no etymologies found.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.

  • (n.) The absolute top of a piston's stroke within a piston engine's cylinder (a.k.a. TDC). Top dead center is the reference point from which ingition timing is calibrated.

    September 10, 2009