[ ri-trak-til ]
/ rɪˈtræk tɪl /

adjective Zoology.

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

Origin of retractile

First recorded in 1770–80; retract1 + -ile

Related forms

re·trac·til·i·ty [ree-trak-til-i-tee] /ˌri trækˈtɪl ɪ ti/, nounnon·re·trac·tile, adjectivenon·re·trac·til·i·ty, nounsub·re·trac·tile, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for nonretractile


/ (rɪˈtræktaɪl) /


capable of being drawn inthe retractile claws of a cat

Derived Forms

retractility (ˌriːtrækˈtɪlɪtɪ), noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for nonretractile


[ rĭ-trăktĭl, -tīl′ ]


That can be drawn back or in, as the claws of a cat.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.