pyrophyllite Hear it!

pyrophyllite Definition

pyro·phyl·lite (pī′rə fil′īt′)

noun

a very soft, greasy, monoclinic mineral, AlSiO(OH), that is similar to talc in structure, used as a lubricant and in making rubber, soap, etc.; hydrous aluminum silicate

Etymology: Ger pyrophyllit: see pyro- & phyll(o)- & -ite

pyrophyllite Usage Examples

Modifies a noun

  • gasket: The problem of pressurizing a hot assembly with soft pyrophyllite gaskets must be investigated further; perhaps the gaskets can be fired before use.