Definition of midpiece in English:

midpiece

Pronunciation /ˈmɪdpiːs/

noun

  • 1Biology
    A middle section or part of a structure, organism, etc.

  • 2Biology
    A region of the spermatozoon located behind the neck and ensheathed in closely-packed mitochondria.

  • 3Medicine
    historical A component of complement identified in the euglobulin fraction (consisting chiefly of the first component, C1).

Origin

Late 19th century; earliest use found in American Naturalist. From mid + piece.