The Collaborative International Dictionary
Somatopleure
Somatopleure \So"ma*to*pleure\, n. [Gr. sw^ma, sw`matos, body + pleyra` side.] (Anat.) The outer, or parietal, one of the two lamell[ae] 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.
Wiktionary
somatopleure
n. (context embryology English) A fold of tissue, in the embryo of a vertebrate, from which the walls of the body and the amnion develop.