word-forming element meaning "pertaining to," from Latin -anus, adjective suffix, in some cases via French -ain, -en. From PIE *-no-.
Entries linking to -an
amoebaean adj.
also amoebean, "alternating, answering alternately," 1650s, from Greek amoibē "change, alteration; exchange" (see amoeba) + -an.
antiquarian n.
"one who studies or is fond of antiquities, one versed in knowledge of ancient things," c. 1600, with -an + Latin antiquarius "pertaining to antiquity," from antiquus "ancient, aged, venerable" (see antique (adj.)). In later use more specifically "collector of antiquities; dealer in old books, coins, objects of art, etc." As an adjective, "pertaining to antiquaries," from 1771. Compare antiquary.