# tribosphenic

> English word · Adjective

## Definitions
1. Describing the original placental molars that have a talonid in the lower molar teeth, where the protocone of the upper teeth hits. Definied by George Gaylord Simpson in 1936.

## Etymology
Combining form from Ancient Greek τριβεo (tribeo, “rub, grind or pound”) and Ancient Greek σφήν (sphḗn, “wedge”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/tribosphenic