apportion v. + Add to list US //əˈpɔɹʃən// UK //ɐpˈɔːʃən// ap·por·tion SynonymsEtymology Synonyms allocatedealshareOriginLATad→LA-LATapportionare→OFRaporcioner→FRMapportionner→ENapportion From Middle French apportionner, from Old French aporcioner, from Late Latin apportionare, from Latin ad + portio. See portion.