See Also: perlite(medicine)
perlite(dictionary)
perlite(encyclopedia)

perlite (iou)



perlite noun. M19.
[French, from perle PEARL noun1 + -ITE1.]
A form of obsidian consisting of vitreous globules expandable by heating and used for insulation, plant growth media, etc.
perlitic adjective pertaining to or characteristic of perlite; spec. of or designating a cracked structure in natural glasses caused by contraction during cooling: L19.