retractile

Example Sentences

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Mantle oval, covering the head and the greater part of the body; anterior tentacles, ill-developed; branchiae generally retractile.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

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

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 genital somite is always small and sometimes retractile within the somite bearing the last pair of legs.

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

Decapoda.—Four pairs of ordinary non-retractile arms which are shorter than the body, and one pair of tentacular arms, situated between the third and fourth normal arms on each side and retractile within special pouches.

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