Definition of non- in English:

non-

prefix

  • 1Expressing negation or absence.

    ‘non-aggression’
    ‘non-recognition’
    1. 1.1 Not of the kind or class described.
      ‘non-believer’
      ‘nonconformist’
    2. 1.2 Not of the importance implied.
      ‘non-issue’
  • 2(added to adverbs) not in the way described.

    ‘non-uniformly’
  • 3(added to verbs to form adjectives) not causing or requiring.

    ‘non-skid’
    ‘non-iron’
  • 4Expressing a neutral negative sense when a corresponding form beginning with in- or un- has a special connotation (such as non-human compared with inhuman).

Usage

The prefixes non- and un- both have the meaning ‘not’, but tend to be used with a difference of emphasis. See un-

Origin

From Latin non ‘not’.

Pronunciation

non-

/nɒn/