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词汇 rectrices
释义

Definition of rectrices in English:

rectrices

plural nounˈrɛktrɪsiːz
Ornithology
  • The larger feathers in a bird's tail, used for steering in flight.

    〔鸟〕尾羽,舵羽。比较REMIGES

    Compare with remiges
    Example sentencesExamples
    • I plucked the outer right rectrix (tail feather), thereby inducing the growth of a replacement.
    • That scheduling results in little overlap between molt of rectrices and outer primaries, both of which are important to landing.
    • We also removed the central rectrix from the right side of the tail of each adult to determine feather growth rate.
    • Most birds showed signs of moderate to heavy wear of the secondary coverts and rectrices.
    • Age determination was based on the shape of rectrices.
    Synonyms
    plume, quill

Origin

Mid 18th century: from Latin, feminine plural of rector 'ruler' (see rector).

Definition of rectrices in US English:

rectrices

plural nounˈrekˌtrəsēz
Ornithology
  • The larger feathers in a bird's tail, used for steering in flight.

    〔鸟〕尾羽,舵羽。比较REMIGES

    Compare with remiges
    Example sentencesExamples
    • Most birds showed signs of moderate to heavy wear of the secondary coverts and rectrices.
    • I plucked the outer right rectrix (tail feather), thereby inducing the growth of a replacement.
    • We also removed the central rectrix from the right side of the tail of each adult to determine feather growth rate.
    • Age determination was based on the shape of rectrices.
    • That scheduling results in little overlap between molt of rectrices and outer primaries, both of which are important to landing.
    Synonyms
    plume, quill

Origin

Mid 18th century: from Latin, feminine plural of rector ‘ruler’ (see rector).

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