- 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.
Origin of mentum
1685–95; < New Latin, Latin mentum chin, akin to mouth
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mentum
Gulo-mental: includes the region covered by the gulag and mentum.Explanation of Terms Used in Entomology
John. B. Smith
But the -mentum is a mere termination, and has nothing to do with mens at all.
The mentum carries at its extremity a pair of lobes with sharp fangs.The Life-Story of Insects
Geo. H. Carpenter
The part in this work regarded as the mentum, does not in all cases accord with what MM.
Our Mentum may generally be known by its situation between the hinges and base of the Maxill.
- The chin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.