n.
Pronunciation: s ō - ' ma-t ə - ˌ plu ̇ r
Function: noun
Etymology: New Latin somatopleura, from somat- + Greek pleura side
Date: 1874
: a complex fold of tissue in the embryo of a craniate vertebrate consisting of an outer layer of mesoderm together with the ectoderm that sheathes it and giving rise to the amnion and chorion