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



    BrE BrE//ɪˈrekʃn//
    ; NAmE NAmE//ɪˈrekʃn//
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  1. 1[countable] if a man has an erection, his penis is hard and stands up because he is sexually excited to get/have an erection
  2. 2[uncountable] (formal) the act of building something or putting it in a vertical position the erection of scaffolding around the building See related entries: Structures
  3. 3[countable] (formal) a structure or building, especially a large one The cafe was a bleak, concrete erection with plastic tables and chairs. See related entries: Structures
  4. Word Originlate Middle English: from Latin erectio(n-), from erigere ‘set up’, from e- (variant of ex-) ‘out’ + regere ‘to direct’.
See the Oxford Advanced American Dictionary entry: erection