The Correct spelling is: omission
Common misspellings of the word omission are:
How do you spell omission?. It is not omision or even ommision for that matter!
- The act or an instance of omitting.
- The state of having been omitted.
- Something omitted or neglected.
[Middle English, from Old French, from Late Latin omissiÅ, omissiÅn-, from Latin omissus, past participle of omittere, to disregard. See omit.]