| blastocoel | The cavity formed within the mass of cells of the blastula of many animals during the later stages of cleavage. (18 Nov 1997) |
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| blastocoele | The cavity in the blastula of a developing embryo. Synonym: blastocoele, cleavage cavity, segmentation cavity. Origin: blasto-+ G. Koilos, hollow (05 Mar 2000) |
| blastocoelic | Relating to the blastocele. Synonym: blastocoelic. (05 Mar 2000) |