mentum

[men-tuh m] /ˈmɛn təm/
noun, plural menta
[men-tuh] /ˈmɛn tə/ (Show IPA)
1.
Entomology. the medial plate of the labium in insects.
2.
Botany. a chinlike protuberance formed by the sepals and the base of the column in some orchids.
Origin
1685-95; < Neo-Latin, Latin mentum chin, akin to mouth
Examples from the web for mentum
  • The mo-mentum of the frame thrust the employee backward off the second level.
mentum in Medicine

mentum men·tum (měn'təm)
n. pl. men·ta (-tə)
The chin.