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词汇 Onychophora
释义

Definition of Onychophora in English:

Onychophora

plural nounˌɒnɪˈkɒf(ə)rəˌäniˈkäfərə
Zoology
  • A small phylum of terrestrial invertebrates which comprises the velvet worms such as peripatus. They share characteristics with the arthropods and annelids, having a long, soft segmented body with stubby legs (lobopods).

    〔动〕有爪门;有爪门动物

    Example sentencesExamples
    • Conversely it has been suggested note that the Onychophora are actually modified arthropods, rather than the other way around.
    • Tardigrades, close relatives of Onychophora and Arthropoda, possess ornamented armored exoskeletons in high predation marine environments.
    • However, on both morphological and molecular grounds it seems that two groups that are sometimes given phylum rank, the Onychophora and the Tardigrada, are the closest living relatives of the arthropods.
    • Other ecdysozoan phyla include Nematoda, Tardigrada, and Onychophora; this classification thus removes onychophorans from the Arthropoda and makes them an outgroup.
    • For example, the Onychophora possess 20 or so pairs of identical walking legs.

Origin

Modern Latin (plural), from Greek onux, onukh- 'nail, claw' + -phoros 'bearing'.

Definition of Onychophora in US English:

Onychophora

plural nounˌäniˈkäfərə
Zoology
  • A small phylum of terrestrial invertebrates commonly known as velvet worms. They share characteristics with the arthropods and annelids, having a long soft segmented body with stubby legs (lobopods).

    〔动〕有爪门;有爪门动物

    Example sentencesExamples
    • For example, the Onychophora possess 20 or so pairs of identical walking legs.
    • Other ecdysozoan phyla include Nematoda, Tardigrada, and Onychophora; this classification thus removes onychophorans from the Arthropoda and makes them an outgroup.
    • Tardigrades, close relatives of Onychophora and Arthropoda, possess ornamented armored exoskeletons in high predation marine environments.
    • However, on both morphological and molecular grounds it seems that two groups that are sometimes given phylum rank, the Onychophora and the Tardigrada, are the closest living relatives of the arthropods.
    • Conversely it has been suggested note that the Onychophora are actually modified arthropods, rather than the other way around.

Origin

Modern Latin (plural), from Greek onux, onukh- ‘nail, claw’ + -phoros ‘bearing’.

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