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retractile

/ri-trak-til/US // rɪˈtræk tɪl //UK // (rɪˈtræktaɪl) //

伸缩式,伸缩性,缩回式,缩回

Related Words

Definitions

adj.形容词 adjective
  1. 1

    Zoology.

    • : capable of being drawn back or in, as the head of a tortoise; exhibiting the power of retraction.

Synonyms & Antonyms

Examples

  • Two globose retractile vesicles issue from the ninth and tenth segments of those of Arctia chrysorrhea, &c.

  • A tubular ovipositor, consisting of several pieces often retractile within each other, like the tubes of a telescope.

  • Once upon a time, many, many hundred years ago, the dog did use its claws; they were then retractile.

  • Although they resemble cats superficially they are not directly related to them and their claws are only partly retractile.

  • These small palps were probably retractile, and capable of being withdrawn entirely under the hood.