Meaning of hypoploid

hy•po•ploid

Pronunciation: (hī'pu-ploid"), [key]
— Biol. Biol.
—adj.
  1. having a chromosome number that is less than the diploid number.
—n.
  1. a hypoploid cell or organism.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.