/ ɪˈlɪʒn; NAmE / noun
[ U , C ] ( phonetics ) the act of leaving out the sound of part of a word when you are pronouncing it, as in we'll, don't and let's
—see also elide
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WORD ORIGIN
late 16th cent.: from late Latin elisio(n-) , from Latin elidere crush out, from e- (variant of ex- ) out + laedere to dash.