Tyndall stone (English, noun)
expansion: Tyndall stone (usually uncountable, plural Tyndall stones)
Senses:
glosses: A dolomitic limestone quarried in the vicinity of Tyndall, Manitoba, Canada, famous for its pervasive mottling and numerous fossils.
tags: Canada
uncountable
usually
Forms:
form: Tyndall stones
tags: plural