1. a combining form meaning “nucleus of a cell,” used in the formation of compound words: karyotin.

combining form

  1. indicating the nucleus of a cellkaryogamy

before vowels kary-, word-forming element used since c.1874 in biological terms referring to cell nuclei, from Greek karyon “nut, kernel,” possibly from PIE root *kar- “hard” (see hard (adj.)).


  1. Cell nucleus:karyogamy.

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