bul·la /ˈbʊlə/
大炮
bul·la /ˈbʊlə/ 名詞
(複bullae)泡,大皰,乞門片,前緣脹部
Bul·la n.; pl. Bullæ
1. Med. A bleb; a vesicle, or an elevation of the cuticle, containing a transparent watery fluid.
2. Anat. 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; 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.
4. Zool. A genus of marine shells. See Bubble shell.
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bulla
n 1: (pathology) an elevation of the skin filled with serous
fluid [syn: blister, bleb]
2: the round leaden seal affixed to a papal bull
[also: bullae (pl)]