Meaning of monosome

mon•o•some

Pronunciation: (mon'u-sōm"), [key]
— n. Genetics.
  1. a chromosome having no homologue, esp. an unpaired X chromosome.
  2. a protein-synthetic complex involving the translation of a messenger RNA molecule by a single ribosome.
  3. a monosomic individual.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.