Summarize the following:
Italian elisione (e-li-zio-ne) means deleting part of a word for the ease of pronunciation. Could be with  Contraction. For example, la + Inglese becomes l'Inglese. Fusion. For example, da + il becomes dal, vedere + la becomes vederla. Truncation. Is possible before a consonant or a vowel. For example, quale + buon vento becomes qual buon vento.

Summary:
Learn Elision :