Definition of mesiolingual in US English:

mesiolingual

adjective

Dentistry Zoology
  • Situated on or relating to the mesial and lingual aspects of a tooth.

Origin

1920s. From mesio- + lingual.

Pronunciation

mesiolingual

/ˌmɛsɪə(ʊ)ˈlɪŋɡw(ə)l/