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单词 gemma
释义

Definition of gemma in English:

gemma

nounPlural gemmae ˈdʒɛməˈdʒɛmə
Biology
  • 1A small cellular body or bud that can separate to form a new organism.

    〔生〕芽;胞芽;芽孢

    Example sentencesExamples
    • Leiocoryphe gemma may be a paedomorphic species derived from some Upper Cambrian trilobite with an effaced cephalon.
    • In addition to leaves, moss stems may bear structures for aesexual reproduction - gemmae or bulbils.
    • The surface of the outer perine is formed of a nearly homogenous layer giving rise to dimpled elements that are not clearly discrete (e.g., not gemmae or clavae).
    1. 1.1
      another term for chlamydospore

Origin

Late 18th century (denoting a leaf bud): from Latin, literally 'bud, jewel'.

Definition of gemma in US English:

gemma

nounˈdʒɛməˈjemə
Biology
  • 1A small cellular body or bud that can separate to form a new organism.

    〔生〕芽;胞芽;芽孢

    Example sentencesExamples
    • In addition to leaves, moss stems may bear structures for aesexual reproduction - gemmae or bulbils.
    • Leiocoryphe gemma may be a paedomorphic species derived from some Upper Cambrian trilobite with an effaced cephalon.
    • The surface of the outer perine is formed of a nearly homogenous layer giving rise to dimpled elements that are not clearly discrete (e.g., not gemmae or clavae).
    1. 1.1
      another term for chlamydospore

Origin

Late 18th century (denoting a leaf bud): from Latin, literally ‘bud, jewel’.

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更新时间:2025/4/7 7:53:48