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单词 blastula
释义

Definition of blastula in English:

blastula

nounPlural blastulae, Plural blastulas ˈblastjʊləˈblæstʃələ
Embryology
  • An animal embryo at the early stage of development when it is a hollow ball of cells.

    〔胚〕囊胚

    Example sentencesExamples
    • A lot of research has gone into answering that, and determining the earliest stage at which the blastula breaks symmetry.
    • Gastrulation in its broadest sense is the reorganization of the cells of the blastula to form a multilayered embryo, the gastrula.
    • With time, cells gradually become determined, so that similar cells taken from later-stage blastulas and early gastrulas develop according to their fate at the time of transplantation.
    • Embryos treated at lower concentrations showed delayed gastrulation and those treated at higher concentrations developed to blastulae having abnormal blastocoels with excess cells.
    • How is it possible that in the past six months, this microscopic blastula has transformed into a being with its own organs, spinal cord and brain?

Origin

Late 19th century: modern Latin, from Greek blastos 'sprout'.

Definition of blastula in US English:

blastula

nounˈblæstʃələˈblasCHələ
Embryology
  • An animal embryo at the early stage of development when it is a hollow ball of cells.

    〔胚〕囊胚

    Also called blastosphere
    Example sentencesExamples
    • Gastrulation in its broadest sense is the reorganization of the cells of the blastula to form a multilayered embryo, the gastrula.
    • How is it possible that in the past six months, this microscopic blastula has transformed into a being with its own organs, spinal cord and brain?
    • Embryos treated at lower concentrations showed delayed gastrulation and those treated at higher concentrations developed to blastulae having abnormal blastocoels with excess cells.
    • A lot of research has gone into answering that, and determining the earliest stage at which the blastula breaks symmetry.
    • With time, cells gradually become determined, so that similar cells taken from later-stage blastulas and early gastrulas develop according to their fate at the time of transplantation.

Origin

Late 19th century: modern Latin, from Greek blastos ‘sprout’.

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更新时间:2025/7/3 21:18:02