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English definition of “protuberance”

protuberance

noun [C]     /prəˈtjuː.bər.əns/ US  /-ˈtuː-/ formal
something that sticks out from a surface : If the plant has been infected you will see dark protuberances along the stems .Protruding and sticking outSwellings and lumps specialized medical a projection or swelling on a part of the body such as the chin or the eyebrow : Bunions are bony protuberances that stick out on either side of the foot .
(Definition of protuberance noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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