Etymology

-ploid

Today it means: Indicating the number of homologous sets of chromosomes in a cell. Full definition →

Ancient Greek -πλ(όος)
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The story

  1. Ancient Greek · derived from-πλ(όος)“-fold”
  2. English today-ploid

Back-formation from haploid and diploid. Equivalent to Ancient Greek -πλ(όος) (-pl(óos), “-fold”) + -oid.

Etymology from Wiktionary, CC BY-SA 4.0.