inner cell mass
(redirected from embryoblast)Also found in: Medical.
inner cell mass
[¦in·ər ′sel ‚mas] (embryology)
The cells at the animal pole of a blastocyst which give rise to the embryo and certain extraembryonic membranes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.