| bulla | Origin: L. Bulla bubble. See Bull an edict. 1. <medicine> A bleb; a vesicle, or an elevation of the cuticle, containing a transparent watery fluid. 2. <anatomy> The ovoid prominence below the opening of the ear in the skulls of many animals; as, the tympanic or auditory bulla. 3. A leaden seal for a document; especially. 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. 4. <zoology> A genus of marine shells. See Bubble shell. Source: Websters Dictionary (01 Mar 1998) |
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| bulla ethmoidalis | A bulging of the inner wall of the ethmoidal labyrinth in the middle meatus of the nose, just below the middle nasal concha; it is regarded as a rudimentary concha. Synonym: bulla ethmoidalis. (05 Mar 2000) |
| bulla tympanica | The bony capsule enclosing the middle ear of the cat and dog. (05 Mar 2000) |
| bullace | <botany> A small European plum (Prunus communis, var. Insitita). See Plum. The bully tree. Origin: OE. Bolas, bolace, OF. Beloce; of Celtic origin; cf. Arm. Bolos, polos, Gael. Bulaistear. Source: Websters Dictionary (01 Mar 1998) |
| bullae | The pleural of bulla. (05 Mar 2000) |
| bullate | <biology> Appearing as if blistered; inflated; puckered. <botany> Bullate leaf, a leaf, the membranous part of which rises between the veins puckered elevations convex on one side and concave on the other. Origin: L. Bullatus, fr. Bulla bubble. Source: Websters Dictionary (01 Mar 1998) |
| bleb vs. Bulla | <radiology> Bleb collection of air within layers of viscera pleura, bulla air-filled, thin-walled space within lung (destruction of alveoli), cyst congenital: bronchial or bronchogenic cyst (12 Dec 1998) |
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| pulmonary bulla | An air-filled blister on the surface of the lung, a similar abnormality within the lung presenting as a thin-walled cavity. (05 Mar 2000) |
| ethmoidal bulla | A bulging of the inner wall of the ethmoidal labyrinth in the middle meatus of the nose, just below the middle nasal concha; it is regarded as a rudimentary concha. Synonym: bulla ethmoidalis. (05 Mar 2000) |