retinoid: Meaning and Definition of

ret•i•noid

Pronunciation: (ret'n-oid"), [key]
— n.
  1. any of a group of substances related to vitamin A and functioning like vitamin A in the body.
—adj.
  1. resembling the retina.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.