from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A complex sheet of embryonic cells in craniate vertebrates, formed by association of part of the mesoderm with the ectoderm and developing as the internal body wall.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A fold of tissue, in the embryo of a vertebrate, from which the walls of the body and the amnion develop.
from the GNU version of the Collaborative International Dictionary of English
- n. The outer, or parietal, one of the two lamellæ into which the vertebrate blastoderm divides on either side of the notochord, and from which the walls of the body and the amnion are developed. See splanchnopleure.
from The Century Dictionary and Cyclopedia
- n. The outer one of two divisions of the mesoderm of a four-layered germ, the inner one being the splanchnopleure.
New Latin somatopleura : somato- + Greek pleura, side.(American Heritage® Dictionary of the English Language, Fourth Edition)
Ancient Greek body + side. (Wiktionary)