Definition of retractile in English:

retractile

Syllabification: re·trac·tile
Pronunciation: /riˈtraktəl, -ˌtīl
 
/

adjective

Zoology
Capable of being retracted: a long retractile proboscis
More example sentences
  • In Australia, for example, marsupial herbivores the size of a rhinoceros, kangaroos nearly 10 feet tall, and carnivorous lion-like forms with shearing teeth and retractile claws all roamed the landscape.
  • Like scaphopods, bivalves have a retractile foot which they use to burrow.
  • The morphology of the middle and distal phalanx in Tapocyon exhibits a retractile claw condition, supporting this as the primitive condition for Carnivora / Carnivoramorpha.

Origin

late 18th century: from retract, on the pattern of contractile.

Derivatives

retractility

Pronunciation: /ˌrēˌtrakˈtilətē/
noun
More example sentences
  • The pull cord mechanism for the self-opening umbrella constitutes at least a core tube rest, a core tube, a plurality of sheaves, a lower shaft, a center shaft and a string of pull cord, in which the center shaft contains several sections of short shaft for retractility.
  • Telephone cords used to connect a handset to a base should have sufficient retractility to insure that they will return in a controlled gradual manner to their normal retracted position after having been extended and released.

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