資料來源 : Webster's Revised Unabridged Dictionary (1913)

Prognathic \Prog*nath"ic\, a. (Anat.)
   Prognathous.

資料來源 : WordNet®

prognathic
     adj : having a projecting lower jaw [syn: {prognathous}, {hypognathous}]
           [ant: {opisthognathous}]