ectomesoblast


Also found in: Medical.

ectomesoblast

[¦ek·tō′me·zō‚blast]
(embryology)
An undifferentiated layer of embryonic cells from which arises the epiblast and mesoblast.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.