Meaning of stereoisomer

ster•e•o•i•so•mer

Pronunciation: (ster"ē-ō-ī'su-mur, stēr"-), [key]
— n. Chem.
  1. any of two or more isomers exhibiting stereoisomerism.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.