2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Bulla \Bul"la\, n.; pl {Bull[ae]}. [L. bulla bubble. See {Bull}
an edict.]
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. (Zo["o]l.) A genus of marine shells. See {Bubble shell}.
From WordNet r 1.6 [wn]:
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
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Lake Atitlan, Guatemala
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