| blastospore | Synonym: Blastoconidium. Origin: blasto-+ G. Sporos, seed (05 Mar 2000) |
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| blastostyle | <zoology> In certain hydroids, an imperfect zooid, whose special function is to produce medusoid buds. See Hydroidea, and Athecata. Origin: Gr. Sprout, bud + a pillar. Source: Websters Dictionary (01 Mar 1998) |
| blastotomy | Experimental destruction of one or more blastomeres. Synonym: blastomerotomy. Origin: blasto-+ G. Tome, incision (05 Mar 2000) |