Elision refers to the process of leaving out a sound or syllable, usually for ease of pronunciation or rhythm.
Here are some examples:
* "I'm" for "I am"
* "gonna" for "going to"
* "wanna" for "want to"
* "fish 'n chips" for "fish and chips"
Elision is a common feature of spoken language and can also be found in poetry and song lyrics.