Elision refers to when a sound or syllable is lost or omitted. It particularly affects: (d)consonant clusters, (b) weakly stressed syllables that are not especially missed and (c) words that end in an alveolar consonant and that are immediately followed by a word beginning wiht a consonant. The sounds that are elided are those sounds that are so weakly articulated that they no longer have nay auditory significance. Contracted forms of words are caused by elision