bulla
1. (pathology) an elevation of the skin filled with serous fluid • Syn: blister, bleb • Derivationally related forms: blebby (for: bleb), blistery (for: blister), blister (for: blister) • Topics: pathology • Hypernyms: vesicle, cyst • Hyponyms: water blister, blood blister, pustule 2. the round leaden seal affixed to a papal bull • Hypernyms: seal, stamp
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