English > blastosphere: 1 sense > noun 1, animal| Meaning | Early stage / stage of an embryo produced by cleavage of an ovum; a liquid / liquid-filled sphere whose wall / wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs. |
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| Synonym | blastula |
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| Parts | blastocoel, blastocoele, blastocele, segmentation cavity, cleavage cavity | The fluid-filled cavity inside a blastula |
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| trophoblast | The membrane that forms the wall of the blastocyst in early development |
| Narrower | blastocyst, blastodermic vessicle | The blastula of a placental mammal in which some differentiation of cells has occurred |
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| Broader | embryo, conceptus, fertilized egg | An animal organism in the early stages / stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life |
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| Spanish | blastósfera, blastosphere, blástula |
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| Catalan | blastosphere, blàstula |
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| Adjectives | blastospheric | of or relating to a blastula |
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