-icPronunciation: /ɪk/Definition of -ic suffix 1forming adjectives such as Islamic, terrific. 2forming nouns such as lyric, mechanic. 3denoting a particular form or instance of a noun ending in -ics:aesthetic dietetic tactic 4 Chemistry denoting an element in a higher valency:ferric sulphuricCompare with -ous.Origin:from French -ique, Latin -icus, or Greek -ikos-ic in other Oxford dictionaries Definition of -ic in the US English dictionary