gibbousPronunciation: /ˈgɪbəs/Definition of gibbous adjective (of the moon) having the illuminated part greater than a semicircle and less than a circle. convex or protuberant:his gibbous eyesDerivatives gibbosityPronunciation: /-ˈbɒsɪti/ noun gibbously adverb Origin: late Middle English: from late Latin gibbosus, from Latin gibbus 'hump'gibbous in other Oxford dictionaries Definition of gibbous in the US English dictionary
