gibbous
adjective /ˈɡɪbəs/
  /ˈɡɪbəs/
(specialist)- (of the moon) with the bright part bigger than a semicircle and smaller than a circleOxford Collocations DictionaryGibbous is used with these nouns:
- moon
 
Word Originlate Middle English: from late Latin gibbosus, from Latin gibbus ‘hump’.