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单词 Chelicerata
释义

Definition of Chelicerata in English:

Chelicerata

plural noun kəˌlɪsəˈreɪtəkəˌlisəˈrädə
Zoology
  • A large group of arthropods that comprises the arachnids, sea spiders, and horseshoe crabs. They lack antennae, but possess a pair of chelicerae, a pair of pedipalps, and (typically) four pairs of legs.

    Subphylum Chelicerata, phylum Arthropoda

    Example sentencesExamples
    • Generations of morphologists have been unable to determine the branching order of Chelicerata, Myriapoda, Crustacea and Insecta.
    • Two of these include the first reported rearrangements of arthropod protein-coding genes outside of the Chelicerata.
    • One of these pairs is expected to be the homologue to the chelicerae of the Chelicerata.
    • Arthropods have traditionally been divided into four classes: Trilobita, Chelicerata, Crustacea, and Uniramia.
    • The Chelicerata are distinguished by the absence of antennae, and the presence of fangs or chelicerae (the first pair of appendages) rather than mandibles.

Origin

Modern Latin (plural), from Greek khēlē 'claw' + keras 'horn'.

 
 

Definition of Chelicerata in US English:

Chelicerata

plural nounkəˌlisəˈrädə
Zoology
  • A large group of arthropods that comprises the arachnids, sea spiders, and horseshoe crabs. They lack antennae, but possess a pair of chelicerae, a pair of pedipalps, and (typically) four pairs of legs.

    Subphylum Chelicerata, phylum Arthropoda

    Example sentencesExamples
    • Generations of morphologists have been unable to determine the branching order of Chelicerata, Myriapoda, Crustacea and Insecta.
    • One of these pairs is expected to be the homologue to the chelicerae of the Chelicerata.
    • Two of these include the first reported rearrangements of arthropod protein-coding genes outside of the Chelicerata.
    • The Chelicerata are distinguished by the absence of antennae, and the presence of fangs or chelicerae (the first pair of appendages) rather than mandibles.
    • Arthropods have traditionally been divided into four classes: Trilobita, Chelicerata, Crustacea, and Uniramia.

Origin

Modern Latin (plural), from Greek khēlē ‘claw’ + keras ‘horn’.

 
 
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更新时间:2025/1/9 20:07:06