(alt-of, alternative, morpheme) Alternative form of -an, adjective or noun suffix meaning "of or pertaining to", used with words which already end in a.
From Middle English -n, -en, from Old English -n, -en and Old Norse -inn, both from Proto-Germanic *-anaz, *-inaz, past participle ending of strong verbs. Cognate with Dutch -en, German -en, Swedish -en, Icelandic -inn.
Meanings
(alt-of, alternative, morpheme) Alternative form of -en (past participle ending).