mica
silicate mineral / electrical insulator
Noun
This mineral is characterized by its perfect basal cleavage, allowing it to be split into extremely thin, flexible sheets. This physical property makes it an ideal material for industrial applications where a thin, heat-resistant barrier is required. In technical contexts, it is prized for its high dielectric strength and thermal stability. Because it is an uncountable mass noun referring to a mineral substance, it does not take a plural form in standard geological or industrial usage.
Meanings
Noun
A shiny silicate mineral that occurs as thin, transparent or translucent sheets and is used as an electrical insulator.
"The heating element was encased in mica to prevent electrical shorts."