lélision
L'élision is a phonological process in French by which the final vowel of a word is dropped when the following word begins with a vowel or with a mute h. The elided vowel is usually represented in writing by an apostrophe, producing forms such as l'homme, l'amour, c'est, and j'aime. The use of l'élision helps to avoid hiatus and to produce smoother, more connected speech.
The phenomenon mainly affects determiners, pronouns, prepositions, and some conjunctions that end in a vowel and
Not all words permit elision. If the following word starts with an aspirated h, elision does not