(of a limb or other body part) able to be thrust forward.‘Biologists have been fascinated with the frog's protrusile tongue for decades, but until recently the biomechanics of the tadpole's mouth was a mystery.’
- ‘Like pangolins, aardvarks have a long, protrusile tongue and a gizzard-like stomach.’
Mid 19th century from Latin protrus- ‘extended or thrust forward’ (from the verb protrudere), on the pattern of extrusile.
Are You Learning English? Here Are Our Top English Tips