protuberancy

US: (prō to̅o̅′bər ən sē, -tyo̅o̅′-, prə-)

WordReference Random House Unabridged Dictionary of American English © 2025

pro•tu•ber•an•cy  (prō to̅o̅′bər ən sē, -tyo̅o̅′-, prə-), n., pl. -cies. 

1. protuberance.

• protuber(ant) + -ancy 1645–55

WordReference Random House Unabridged Dictionary of American English © 2025

pro•tu•ber•ant  (prō to̅o̅′bər ənt, -tyo̅o̅′-, prə-), adj. 

1. bulging out beyond the surrounding surface;
   protruding;
   projecting:
   protuberant eyes.

• Late Latin prōtūberant- (stem of prōtūberāns), present participle of prōtūberāre to swell. See pro-¹, tuber, -ant
• 1640–50

pro•tu′ber•ant•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::

protuberant / prəˈtjuːbərənt/ adjective

1. swelling out from the surrounding surface; bulging

Etymology: 17th Century: from Late Latin prōtūberāre to swell, from pro-¹ + tūber swelling

proˈtuberance, proˈtuberancy noun

proˈtuberantly adverb