a. and sb. [f. L. cavitas hollow, cavity + -ARY; cf. voluntas, voluntary.]

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  † 1.  Having a cavity: used as an epithet of those intestinal worms which have a distinct mouth and anus. (Adaptation of Cuvier’s term, vers cavitaires, in his division of intestinal worms.) Also as sb. Obs.

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1835.  Kirby, Hab. & Inst. Anim., I. xi. 319. The Infusories and Polypes, and the Cavitaries of that author (Cuvier).

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1836–9.  Todd, Cycl. Anat., II. 117/1. A third order of Cavitary Entozoa.

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1847.  Nat. Encycl., I. 751/2. The cavitary intestinal worms (cœlelmintha).

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  2.  Of the nature of, or belonging to, a cavity.

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1861.  Hulme, trans. Moquin-Tandon, II. VII. xiii. 397. A small cavitary vesicle.

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1878.  Bell, Gegenbaur’s Comp. Anat., 51. The hollow cavitary system which forms the hæmal passages.

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