mentum

[ men-tuhm ]

/ ˈmɛn təm /

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noun, plural men·ta

[men-tuh]. /ˈmɛn tə/.

Entomology. the medial plate of the labium in insects.

Botany. a chinlike protuberance formed by the sepals and the base of the column in some orchids.

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Origin of mentum

1685–95; <New Latin, Latin mentum chin, akin to mouth

Four years later, Lieberman made his own run for president and, despite his declarations of “Joe-mentum,” was an utter flop.
Joe Lieberman's Civil-Rights Coup|Howard Kurtz|December 19, 2010|DAILY BEAST
Mentum semicirculare antice rotundatum margine antico emarginato.
Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]|Phillip Parker King
Mentum semicirculare antice rotundatum medio emarginato sive edentulo.
Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]|Phillip Parker King
Lorum: in bees: the angular piece upon which the sub-mentum rests.
Explanation of Terms Used in Entomology|John. B. Smith

Mental suture: in Coleoptera, the line between mentum and gula.
Explanation of Terms Used in Entomology|John. B. Smith
Summit of spire heterostrophic; a projection, the mentum, between head and foot; operculum present.
Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5|Various