/ ˌekskləˈmeɪʃn; NAmE / noun
a short sound, word or phrase spoken suddenly to express an emotion. Oh! , Look out! and Ow! are exclamations :
He gave an exclamation of surprise.
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WORD ORIGIN
late Middle English : from Latin exclamatio(n-) , from exclamare shout out, from ex- out + clamare to shout.