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/bˈʊlə/ Listen

noun

Bulla n. (pl. bullae)

(Med.) A bleb; a vesicle, or an elevation of the cuticle, containing a transparent watery fluid.

(Anat.) The ovoid prominence below the opening of the ear in the skulls of many animals; as, the tympanic or auditory bulla.

A leaden seal for a document; esp. the round leaden seal attached to the papal bulls, which has on one side a representation of St. Peter and St. Paul, and on the other the name of the pope who uses it.

(Zool.) A genus of marine shells. See Bubble shell.

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Etymology of 'Bulla'

Collaborative International Dictionary of English 0.48

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"Bulla" Quotes from Famous Books

... (Veracruz), and P. latirostris (San Luis Potosi). From P. difficilis, P. ochraventer differs in having underparts distinctively brownish, rostrum expanded anteriorly with sides almost parallel, anteriormost loph of the first upper molar larger, and auditory bulla smaller. From P. boylei, P. ochraventer differs in having underparts distinctively brownish, tail less distinctly bicolored, rostrum expanded anteriorly with sides almost parallel, and anteriormost loph of the first upper molar larger. From P. banderanus, P. ochraventer ...

— Mammals from Tamaulipas, Mexico • Rollin H. Baker

... Fully formed larva of Echinorhynchus proteus from the body cavity of Phoxinus laevis (from Hamann). Highly magnified. a, Proboscis; b, bulla; c, neck; d, trunk; ...

— Project Gutenberg Encyclopedia

... two three. Moreton Bay : kamarah bulla mudyan. Moreton Island : karawo poonlah madan. Bijenelumbo : warat ngargark 2 1. Limbakarajia : erat ngargark 2 1. Terrutong : roka oryalk 2 1. Limbapyu : immuta lawidperra 2 1. Kowrarega : warapune quassur ...

— Voyage Of H.M.S. Rattlesnake, Vol. 2 (of 2) • John MacGillivray

... Bulla: a blister or blister-like structure: the shield-like sclerite that closes the opening to the trachea in lamellicorn larvae: in Ephemerida a part of the costal area of the fore wing toward the tip, which is slightly swollen ...

— Explanation of Terms Used in Entomology • John. B. Smith