from The American Heritage® Dictionary of the English Language, 4th Edition

  • intransitive v. To swell or bulge.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To bulge outward, producing a rounded protuberance.
  • v. To cause to bulge outward.

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To swell, or be prominent, beyond the adjacent surface; to bulge out.

from The Century Dictionary and Cyclopedia

  • To swell beyond the adjacent surface; be prominent; bulge out.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. form a rounded prominence
  • v. cause to bulge out or project


Late Latin prōtūberāre, prōtūberāt- : Latin prō-, forth; see pro-1 + Latin tūber, a swelling; see teuə- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • The predominance of the querulous interloper rife in the quest to protuberate and wrest away the volition of the American taxpayer is in fact coming to conclusion.

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