Definition of -an in English:

-an

(also -ean, -ian)

Pronunciation /(ə)n/

suffix

  • 1Forming adjectives and nouns from names of places.

    ‘Ohioan’
    • ‘Russian’
    1. 1.1Forming adjectives and nouns from names of systems.
      ‘Anglican’
      • ‘Presbyterian’
    2. 1.2Forming adjectives and nouns from names of zoological classes or orders.
      • ‘crustacean’
    3. 1.3Forming adjectives and nouns from names of founders or leaders.
      ‘Lutheran’
      • ‘Chomskyan’
  • 2Chemistry
    Forming names of organic compounds, chiefly polysaccharides.

    • ‘dextran’

Origin

From Latin -anus, -ana, -anum.