Function: noun
Date: 1877
: any of the three primary layers of cells differentiated in most embryos during and immediately following gastrulation
Function: noun
Date: 1877
: any of the three primary layers of cells differentiated in most embryos during and immediately following gastrulation
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012