Definition of curiosity noun from the Oxford Advanced American Dictionary

     

    curiosity

     noun
    noun
    NAmE//ˌkyʊriˈɑsət̮i//
     
    (pl. curiosities)
     
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  1. 1[uncountable, singular] curiosity (about something) curiosity (to do something) a strong desire to know about something Children show curiosity about everything. a certain curiosity to see what would happen next The letter wasn't addressed to me but I opened it out of curiosity. His answer did not satisfy my curiosity at all. Sophie's curiosity was aroused by the mysterious phone call. intellectual curiosity “Why do you ask?” “Oh, just idle curiosity.” (= no particular reason)
  2. 2[countable] an unusual and interesting thing The museum is full of historical curiosities.
  3. Idioms
    curiosity killed the cat(saying)
     
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    used to tell someone not to ask questions or try to find out about things that do not concern them
See the Oxford Advanced Learner's Dictionary entry: curiosity