Meaning of -AN in English

-AN

-an / ə n/ AmE ( also -ean , -ian ) suffix

[ Language: Old French ; Origin: -en , from Latin -anus ]

1 . [in adjectives and nouns] someone or something of, from, or connected with a particular thing, place, or person:

suburban

Jamesian

2 . [in nouns] someone skilled in or studying a particular subject:

a historian (=someone who studies history)

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.