perlite

play
noun per·lite \ˈpər-ˌlīt\

Definition of perlite

  1. :  volcanic glass that has a concentric structure, appears as if composed of concretions, is usually grayish and sometimes spherulitic, and when heated expands to form a lightweight aggregate used especially in concrete and plaster and as a medium for potting plants

perlitic

play \ˌpər-ˈli-tik\ adjective

Origin and Etymology of perlite

French, from perle pearl


First Known Use: 1833


Learn More about perlite


Seen and Heard

What made you want to look up perlite? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

an alert or lookout

Get Word of the Day daily email!