| holoblastic | <biology> Undergoing complete segmentation; composed entirely of germinal matter, the whole of the yolk undergoing fission; opposed to meroblastic. Source: Websters Dictionary (01 Mar 1998) |
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| holoblastic cleavage | Cleavage in which the blastomeres are completely separated; the entire egg participates in cell division. Synonym: complete cleavage, total cleavage. (05 Mar 2000) |