bulla Meaning, Definition & Usage

  1. noun (pathology) an elevation of the skin filled with serous fluid
    blister; bleb.
  2. noun the round leaden seal affixed to a papal bull

WordNet

Bul"la noun
Etymology
L. bulla bubble. See Bull an edict.
Wordforms
plural Bullæ
Definitions
  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. (Zoöl.) A genus of marine shells. See Bubble shell.

Webster 1913