English
Noun
perlite (plural perlites)
- (mineralogy) An amorphous volcanic glass formed by the hydration of obsidian.
- The lightweight insulating material and aggregate resulting from expanding perlite glass by heat.
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1928, Lawrence R. Bourne, chapter 4, in Well Tackled!:- Technical terms like ferrite, perlite, graphite, and hardenite were bandied to and fro, and when Paget glibly brought out such a rare exotic as ferro-molybdenum, Benson forgot that he was a master ship-builder, […]
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Latin
Participle
perlite
- vocative masculine singular of perlitus