The Collaborative International Dictionary
Holoblastic
Holoblastic \Hol`o*blas"tic\, a. (Biol.) Undergoing complete segmentation; composed entirely of germinal matter, the whole of the yolk undergoing fission; -- opposed to meroblastic.
Wiktionary
holoblastic
a. (context biology of an egg English) cleaving, and separating into separate blastomeres.