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词汇 Malacostraca
释义

Definition of Malacostraca in English:

Malacostraca

plural nounˌmaləˈkɒstrəkəˌmaləˈkästrəkə
Zoology
  • A large class of crustaceans which includes crabs, shrimps, lobsters, isopods, and amphipods. They have compound eyes, which are typically on stalks.

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    Example sentencesExamples
    • Development ranges from direct to metamorphic among members of class Malacostraca.
    • On the whole the maxillopodan groups Ostracoda and Cirripedia and the Malacostraca have left the most significant fossil records.
    • The other two types of larvae, Zoea and Megalopae, are only found in members of Malacostraca.
    • Both volumes begin with a general introduction to the Malacostraca, followed by a historical overview of the most important contributions to Australian carcinology over the past 200 years.
    • Maxillopoda and Malacostraca are by far the most diverse of the groups and contain most animals you might typically recognize as crustaceans.

Origin

Modern Latin (plural), from malaco- 'soft' + Greek ostrakon 'shell'.

Definition of Malacostraca in US English:

Malacostraca

plural nounˌmaləˈkästrəkə
Zoology
  • A large class of crustaceans which includes crabs, shrimps, lobsters, isopods, and amphipods. They have compound eyes, which are typically on stalks.

    〔动〕软甲纲

    Example sentencesExamples
    • Both volumes begin with a general introduction to the Malacostraca, followed by a historical overview of the most important contributions to Australian carcinology over the past 200 years.
    • Maxillopoda and Malacostraca are by far the most diverse of the groups and contain most animals you might typically recognize as crustaceans.
    • Development ranges from direct to metamorphic among members of class Malacostraca.
    • The other two types of larvae, Zoea and Megalopae, are only found in members of Malacostraca.
    • On the whole the maxillopodan groups Ostracoda and Cirripedia and the Malacostraca have left the most significant fossil records.

Origin

Modern Latin (plural), from malaco- ‘soft’ + Greek ostrakon ‘shell’.

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