Definitions for omitoʊˈmɪt

Random House Webster's College Dictionary

o•mitoʊˈmɪt(v.t.)o•mit•ted, o•mit•ting.

to leave out; fail to include.
to forbear or fail (to do, make, use, send, etc.).

Origin of omit:

1400–50; < L omittere to let go =o-o-2+mittere to send

o•mit′ter(n.)

Princeton's WordNet

exclude, except, leave out, leave off, omit, take out(verb)
prevent from being included or considered or accepted
"The bad results were excluded from the report"; "Leave off the top piece"
neglect, pretermit, omit, drop, miss, leave out, overlook, overleap(verb)
leave undone or leave out
"How could I miss that typo?"; "The workers on the conveyor belt miss one out of ten"

Kernerman English Learner's Dictionary

omit(verb)ʊˈmɪt
to not include
Several offensive words have been omitted.
omitʊˈmɪt
to forget to
They omitted to inform us of their new address.

Wiktionary

omit(Verb)
To leave out or exclude. (most common usage)
omit(Verb)
To fail to perform.
omit(Verb)
To neglect or take no notice of. (Obscure)

Origin: (at least by 1422) Enters Late Middle English, from Latin omittere which means literally “to let go”, from ob- + mittere (“to send”), but also had the connotations to ‘fail to perform’ and ‘to neglect’.