mesognathous

adjective

me·​sog·​na·​thous mə-ˈzäg-nə-thəs  mē-ˈsäg- 

variants also mesognathic

ˌmez-äg-ˈnath-ik  ˌmēs- 

: having the jaws of medium size and slightly projecting with a gnathic index of 98.0 to 102.9

mesognathy

mə-ˈzäg-nə-thē 

noun

plural mesognathies