ELISION

In linguistics, an elision or deletion is the omission of one or more sounds in a word or phrase. However, these terms are also used to refer more narrowly to cases where two words are run together by the omission of a final sound. An example is the elision of word-final /t/ in English if it is preceded and followed by a consonant: "first light" is often pronounced "firs' light". Many other terms are used to refer to specific cases where sounds are omitted.