Pl. -a. [mod.L., ad. Gr. ἀσκίδιον, dim. of ἀσκός leather bag, wine-skin.]

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  1.  Zool. (Also Ascidia, pl. -æ.) A genus of tunicate mollusks, having the enveloping tunic elastic and leathery: see ASCIDIAN.

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1766.  Pennant, Zool., IV. 48 (Jod.). Ascidia, taken off Scarborough.

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1856.  Gosse, Marine Zool., II. 30. The Ascidiæ usually adhere to stones and old shells.

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1878.  Bell, Gegenbaur’s Comp. Anat., 391. In many Ascidia a new individual buds from the body of the adult animal.

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  2.  Bot. A pitcher-shaped leafy appendage.

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1830.  Lindley, Nat. Syst. Bot., 81. The presence of Ascidia, or pitchers among its leaves, resembling those of Nepenthes.

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