metopism
/ˈmɛtəpɪz(ə)m/Physical Anthropol. and Anatomy
noun
Persistence of the frontal (metopic) suture of the skull (which commonly undergoes closure and obliteration in childhood).
Origin
Late 19th century; earliest use found in William Flower (1831–1899), zoologist and museum curator. From French métopisme from métop- (in métopique) + -isme.