retractile

Example Sentences

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There is also in some genera a median retractile sensory papilla on the dorsal posterior surface above the rectum, not covered by the cuticle.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2 "Chicago, University of" to "Chiton" by Various

In Loligo they are completely retractile, very slightly so in the majority of the Oigopsida, and in Rhynchoteuthis they are united to form a beak-like appendage.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various

The arteries are highly elastic, being extensile and retractile both in length and breadth.

From Special Report on Diseases of the Horse by Michener, Charles B.

The jaws were widely extended, so that the sharp retractile teeth were plainly visible, and the forked tongue at intervals was shot forward, and gleamed in the sun.

From The Young Yagers A Narrative of Hunting Adventures in Southern Africa by Reid, Mayne

The reader will remember that in the Vorticella previously described, the bells stood upon stalks that were very flexible, and retractile by means of a muscle running down their length.

From Marvels of Pond-life A Year's Microscopic Recreations by Slack, Henry J.