updates / April 07, 2026 Definitions of macrognathia - OneLook Definitions from Wiktionary (macrognathia)▸ noun: The condition of having abnormally large jaws.eurygnathism, megalodontia, megagnathia, metagnathism, macrostomy, sciurognathy, megadonty, amblygnathy, schizognathism, brachygnathism, more...▸ Words similar to macrognathia▸ Usage examples for macrognathia▸ Idioms related to macrognathia▸ Civic discussion about macrognathia (New!)▸ Popular adjectives describing macrognathia▸ Words that often appear near macrognathia▸ Rhymes of macrognathia▸ Invented words related to macrognathia