# mesohyl

> English word · Noun

## Definitions
1. The gelatinous matrix within a sponge, filling the space between the external pinacoderm and the internal choanoderm.

## Etymology
From meso- (“middle”) + Ancient Greek ὕλη (húlē, “wood, timber, matter”) (whence English hyle).

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