• word of the day

    blastosphere

    blastosphere - Dictionary definition and meaning for word blastosphere

    Definition
    (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose 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
    Synonyms : blastula
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