a. [f. L. extens- ppl. stem of extendĕre to EXTEND + -ILE.]
1. Capable of being stretched out; extensible.
1744. Armstrong, Preserv. Health, II. 55, note. As these small vessels become solid, the larger must of course grow less extensile.
1831. R. Knox, Cloquets Anat., 603. It is connected with the neighbouring parts by an extensile cellular tissue.
1883. Chamb. Jrnl., 13. The capsules of its [a childs] joints [are] more extensile than ours.
2. Of the tongue, a tentacle, etc.: Capable of being protruded.
1802. Bingley, Anim. Biog. (1813), I. 125. The tongue [is] cylindrical and extensile.
1858. T. R. Jones, Aquar. Nat., 69. The Hydratuba with thirty or more very extensile, flexible, slender tentacula.
1879. A. R. Wallace, Australasia, iii. 56. [Tarsipes] is a true honeysucker with an extensile tongue.