Dictionary
chor•da•mes•o•derm
Pronunciation: (kôr"du-mez'u-dûrm", -mes'-, -mē'zu-, -su-), [key]—
n. Embryol.
the part of the blastoderm of a young embryo that forms the notochord and related structures.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.