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non

Non is defined as not or no.

(prefix)

An example of non used as a prefix is in the phrase, "non-essential," which means not essential.

Non is defined as no.

(interjection)

An example of non used as an interjection is in the sentences, "Non! I don't want to go to the park today!" which means "No! I don't want to go to the park today!"

See non in Webster's New World College Dictionary

adverb, interjection

Origin: Fr

: used to give a negative or privative force, esp. to nouns, adjectives, and adverbs
1. not
2. the opposite of: nonessential
3. excluded (from a specified category): nonvoter, nonfiction
4. refusal or failure: noncooperation
having the superficial aspect, but not the real value, of: used to give a pejorative force, esp. to nouns: nonbook, nonevent
having the value, but not the surface aspect or identity, of: used to indicate potential, but unacknowledged or unrecognized, qualities: noncandidate, noncampaign

Origin: < L non, not < OL noenum < ne-, negative particle (see no) + oinom, one

See non in American Heritage Dictionary 4

prefix

Not: noncombatant.

Origin:

Origin: Middle English

Origin: , from Old French

Origin: , from Latin nōn, not; see ne in Indo-European roots

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