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P______
Definitions
An amorphous volcanic glass formed by the hydration of obsidian.
Word origin
From French perle (“pearl”) + -ite.
Used in a sentence
“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, […]”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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