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词汇 zygodactyl
释义

Definition of zygodactyl in English:

zygodactyl

adjective zɪɡə(ʊ)ˈdaktɪlˌzʌɪɡə(ʊ)ˈdaktɪlˌzaɪɡoʊˈdæktl
  • (of a bird's feet) having two toes pointing forward and two backward.

    (鸟足)对趾的

    the cuckoo's zygodactyl toes
    Example sentencesExamples
    • All the small zygodactyl or semizygodactyl forms, generally from Eocene deposits, are jumbled together in the family Zygodactylidae.
    • Their legs are strong, and feathered in many species; they have zygodactyl raptorial feet.
    • Their talons are sharp and hooked and their feet are zygodactyl with a reversible fourth toe.
    • Paleogene fossils also document diverse extinct branches of the neornithine tree, ranging from large pseudotoothed seabirds to giant flightless land birds to small zygodactyl perching birds.
noun zɪɡə(ʊ)ˈdaktɪlˌzʌɪɡə(ʊ)ˈdaktɪlˌzaɪɡoʊˈdæktl
  • A bird with zygodactyl feet.

    对趾鸟

Derivatives

  • zygodactylous

  • adjectiveˌzɪɡə(ʊ)ˈdaktɪləsˌzʌɪɡə(ʊ)ˈdaktɪləsˌzaɪɡoʊˈdæktələs
    • This zygodactylous feet also enable the Blue-crowned Hanging Parrot to hang upside down to reach otherwise inaccessible fruits or flowers.
      Example sentencesExamples
      • The feet of most woodpeckers are large and zygodactylous, meaning two toes point forward and two backward on each foot.
      • Owls are zygodactylous: two toes face anteriorly and two toes face posteriorly.
      • Most Cuckoos have moderately sized, slightly down curved bills, medium to long wings and zygodactylous feet.
      • The feet are zygodactylous, with two toes pointed forward and two toes pointed backward.
  • zygodactyly

  • noun
    • All three fall into the category of type I syndactyly, or zygodactyly.
      Example sentencesExamples
      • The condition with 2 in front and 2 in back is called zygodactyly, and it's limited to a few groups, though it seems to have evolved multiple times.
      • Rather than developing zygodactyly to aid running, Harris suggests that both the roadrunner and its predecessor began as tree dwellers and moved to the ground later.
      • The modern roadrunner, is actually a type of cuckoo and, like all cuckoos, has two forward-pointing and two backward-pointing toes, a condition known as zygodactyly that is also evident in Shandongornipes tracks.
      • The full spectrum of observed defects ranges from hypoplastic nails, cutaneous syndactyly, bony syndactyly, transverse reduction defects, zygodactyly, ectrodactyly, polydactyly, and brachydactyly.

Definition of zygodactyl in US English:

zygodactyl

adjectiveˌzaɪɡoʊˈdæktlˌzīɡōˈdaktl
  • (of a bird's feet) having two toes pointing forward and two backward.

    (鸟足)对趾的

    the cuckoo's zygodactyl toes
    Example sentencesExamples
    • All the small zygodactyl or semizygodactyl forms, generally from Eocene deposits, are jumbled together in the family Zygodactylidae.
    • Paleogene fossils also document diverse extinct branches of the neornithine tree, ranging from large pseudotoothed seabirds to giant flightless land birds to small zygodactyl perching birds.
    • Their legs are strong, and feathered in many species; they have zygodactyl raptorial feet.
    • Their talons are sharp and hooked and their feet are zygodactyl with a reversible fourth toe.
nounˌzaɪɡoʊˈdæktlˌzīɡōˈdaktl
  • A bird with zygodactyl feet.

    对趾鸟

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