/i lizh"euhn/ , n.
1. the omission of a vowel, consonant, or syllable in pronunciation.
2. (in verse) the omission of a vowel at the end of one word when the next word begins with a vowel, as th'orient.
3. an act or instance of eliding or omitting anything.
[ 1575-85; elision- (s. of elisio ) a striking out, equiv. to elis ( us ) (ptp. of elidere; see ELIDE) + -ion- -ION ]