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[boo l-uh, buhl-uh] /ˈbʊl ə, ˈbʌl ə/
noun, plural bullae
[boo l-ee, buhl-ee] /ˈbʊl i, ˈbʌl i/ (Show IPA)
a seal attached to an official document, as a papal bull.
an ancient Roman pendant, consisting of a rounded box containing an amulet.
Pathology. a large vesicle.
Zoology. a blisterlike or bubblelike prominence of a bone, as that of the tympanic bone in the skull of certain mammals.
Origin of bulla
1840-50; < Latin: bubble, also stud, boss, knob (whence Medieval Latin bulla official seal) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for bulla


/ˈbʊlə; ˈbʌlə/
noun (pl) -lae (-liː)
a leaden seal affixed to a papal bull, having a representation of Saints Peter and Paul on one side and the name of the reigning pope on the other
an ancient Roman rounded metal or leather box containing an amulet, worn around the neck
(pathol) another word for blister (sense 1)
(anatomy) a rounded bony projection
Word Origin
C19: from Latin: round object, bubble
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for bulla

1876, from Latin bulla (plural bullae), literally "bubble" (see bull (n.2)).

Online Etymology Dictionary, © 2010 Douglas Harper
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bulla in Medicine

bulla bul·la (bul'ə)
n. pl. bul·lae (bul'ē)

  1. A large blister or vesicle of pathological origin.

  2. A bubblelike structure.

bul'lous adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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