-ia1Pronunciation: /ɪə/Definition of -ia suffix 1forming nouns adopted unchanged from Latin or Greek (such as mania, militia), and modern Latin terms (such as utopia). 2forming names of: Medicine states and disorders:anaemia diphtheria Botany & Zoology genera and higher groups:dahlia Latimeria 3forming names of countries:IndiaOrigin:representing Latin or Greek endings-ia in other Oxford dictionaries Definition of -ia in the US English dictionary