n.
Pronunciation: ' blas-t ə - ˌ disk
Function: noun
Date: circa 1881
: the embryo-forming portion of an egg with discoidal cleavage usually appearing as a small disc on the upper surface of the yolk mass ― see EGG illustration
n.
Pronunciation: ' blas-t ə - ˌ disk
Function: noun
Date: circa 1881
: the embryo-forming portion of an egg with discoidal cleavage usually appearing as a small disc on the upper surface of the yolk mass ― see EGG illustration
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012