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



    BrE BrE//rɪˈpelənt//
    ; NAmE NAmE//rɪˈpelənt//
    [uncountable, countable]
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  1. 1a substance that is used for keeping insects away from you (an) insect repellent
  2. 2a substance that is used on cloth, stone, etc. to prevent water from passing through it (a) water repellent
  3. Word Originmid 17th cent.: from Latin repellent- ‘driving back’, from the verb repellere, from re- ‘back’ + pellere ‘to drive’.
See the Oxford Advanced American Dictionary entry: repellent