prognathous Syllabification: (prog·na·thous)Pronunciation: /ˈprägnəTHəs, prägˈnā-/Definition of prognathous adjective (especially of a person) having a projecting lower jaw or chin. (of a jaw or chin) projecting. (of an insect) having projecting mouthparts. Derivatives prognathicPronunciation: /prägˈnaTHik/ adjective prognathismPronunciation: /-ˌTHizəm/ noun Origin: mid 19th century: from pro-2 'before' + Greek gnathos 'jaw' + -ousprognathous in other Oxford dictionaries Definition of prognathous in the British & World English dictionary
