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



    BrE BrE//ˌmɒnˈsuːn//
    ; NAmE NAmE//ˌmɑːnˈsuːn//
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  1. 1a period of heavy rain in summer in S Asia; the rain that falls during this period See related entries: Rain
  2. 2a wind in S Asia that blows from the south-west in summer, bringing rain, and the north-east in winter
  3. Word Originlate 16th cent.: from Portuguese monção, from Arabic mawsim ‘season’, from wasama ‘to mark, brand’. Wordfinderdownpour, drought, flash flood, monsoon, precipitation, puddle, rain, shelter, shower, squallExtra examples The south-west monsoon sets in during April. Travelling is much more difficult during the monsoon. By the end of September it seemed that the monsoon season was drawing to a close. The monsoon blew relentlessly into our faces. This year’s monsoon rains are expected to flood several villages. monsoon rains/​winds/​weather
See the Oxford Advanced American Dictionary entry: monsoon