protuberant - Dictionary definition and meaning for word protuberant
protuberant=protrude+aberrant,intrude=incursion=running in ,protrude=running out,protuberant=running out abnormally,sticking out from a surface
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Protuberance=p(protrude)+ro(rounded)+tube(tube shaped).
protuberant->consider tube which bulges out when you blow air..
pro + tube + errant; tube is going to increase in erratically