mesohyl means the gelatinous matrix within a sponge, filling the space between the external pinacoderm and the internal choanoderm. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
Etymology
From meso- (“middle”) + Ancient Greek ὕλη (húlē, “wood, timber, matter”) (whence English hyle).
noun
- The gelatinous matrix within a sponge, filling the space between the external pinacoderm and the internal choanoderm.