Definition of protrusion noun from the Oxford Advanced Learner's Dictionary



BrE BrE//prəˈtruːʒn//
; NAmE NAmE//proʊˈtruːʒn//
[countable, uncountable] (formal)
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a thing that sticks out from a place or surface; the fact of doing this a protrusion on the rock face Word Originearly 17th cent. (in the sense ‘thrust something forward or onward’): from Latin protrudere, from pro- ‘forward, out’ + trudere ‘to thrust’.
See the Oxford Advanced American Dictionary entry: protrusion