prognathous
|prog-nath-ous|
C2
🇺🇸
/prɑɡˈnæθəs/
🇬🇧
/prɒɡˈnæθəs/
forward‑projecting jaw
Etymology
Etymology Information
'prognathous' originates from Greek, specifically the word 'prognathos', where 'pro-' meant 'before' and 'gnathos' meant 'jaw'.
Historical Evolution
'prognathous' changed from Greek 'prognathos' into New Latin/Scientific Latin as 'prognathus/prognathous' and was adopted into English in the 19th century as the adjective 'prognathous'.
Meaning Changes
Initially, it meant 'having a jaw that projects forward,' and this anatomical meaning has been retained in modern usage.
Meanings by Part of Speech
Adjective 1
having a projecting jaw or jaws; having the lower (or both) jaws protruding forward.
The fossil skull is prognathous, with a markedly projecting lower jaw.
Synonyms
prognathicforward-jawedjaw-protruding
Antonyms
orthognathousretrognathousreceding-jawed
Last updated: 2026/01/07 19:31