[shtahyn-kern, -kurn, stahyn-]
the fossilized outline of a hollow organic structure, as a skull or a mollusk shell, formed when mud or sediment consolidated within the structure and the structure itself disintegrated or dissolved.
Origin of steinkern
Also called endocast.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019