-ian

-ian

suff.1. Of, relating to, or resembling: Bostonian.2. One relating to, belonging to, or resembling: academician.
[Middle English -ien, -ian, from Old French -ien, from Latin -iānus, adj. and n. suff.]

-ian

suffix a variant of -an: Etonian; Johnsonian. [from Latin -iānus]

-ian

a suffix with the same meaning and properties as -an1; -ian is now the more productive of the two suffixes in recent coinages, esp. when the base noun ends in a consonant: Orwellian; Washingtonian.