The Collaborative International Dictionary
nonretractile
nonretractable \nonretractable\ nonretractile \nonretractile\adj. not able to be drawn into the main body; -- of claws and other extensile parts of animals or objects; as, a bear's claws, unlike a cat's, are nonretractile. Opposite of retractile.
Wiktionary
nonretractile
a. Not retractile.
WordNet
nonretractile
adj. not capable of being retracted [syn: nonretractable] [ant: retractile]