# mesoplastron

> English word · Noun

## Definitions
1. either of a pair of transverse hexagonal bones in a turtle that lie between the hyoplastral and hypoplastral bones

## Etymology
From meso- + plastron.

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