Designating or relating to a position of the fetal head in a face presentation in which the chin is directed towards the sacrum or a sacroiliac joint of the mother.
Origin
Early 20th century; earliest use found in William Dorland (1864–1956), obstetrician. From mento- + posterior.
Definition of mentoposterior in US English:
mentoposterior
adjectiveˌmɛntəʊpɒˈstɪərɪə
Medicine
Designating or relating to a position of the fetal head in a face presentation in which the chin is directed towards the sacrum or a sacroiliac joint of the mother.
Origin
Early 20th century; earliest use found in William Dorland (1864–1956), obstetrician. From mento- + posterior.