retractile

Example Sentences

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The thoracic vertebrae number 13; the feet are digitigrade, with five front and four hind toes, of which the claws are retractile; and the metatarsus is haired all round.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" by Various

The bells or cups are not, as might be fancied from a casual inspection, open like wineglasses at the top, but furnished with a retractile disk or cover, on which the cilia are arranged.

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

A short distance behind the head were two tremendous reddish-brown fins, with strong supporting spines that seemed to terminate in retractile claws.

From The Terror from the Depths by Wright, Sewell Peaslee

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.

Numerous pedal tentacles around the mouth, which are retractile within sheaths.

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