ululation
noun/ˌʌljuˈleɪʃn/, /ˌjuːljuˈleɪʃn/
/ˌʌljuˈleɪʃn/, /ˌjuːljuˈleɪʃn/
[uncountable, countable] (literary)- an act of giving a long loud call
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ululation
Definition of ululation noun from the Oxford Advanced Learner's Dictionary