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Perlite vs Penlite - What's the difference?

perlite | penlite |

As nouns the difference between perlite and penlite

is that perlite is an amorphous volcanic glass formed by the hydration of obsidian while penlite is dated form of penlight.

perlite

English

Noun

(wikipedia perlite) (en noun)
  • (mineralogy) An amorphous volcanic glass formed by the hydration of obsidian.
  • The lightweight insulating material and aggregate resulting from expanding perlite glass by heat.
  • *{{quote-book, year=1928, author=Lawrence R. Bourne
    • , title=Well Tackled! , chapter=4 citation , passage=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, […]}}

    Anagrams

    * * ----

    penlite

    English

    Noun

    (en noun)
  • (dated) A battery or cell of size AA, size AAA, or size N.Howard G. McEntree, “Clever New Gadgets Run on Flashlight Batteries”, in Popular Science , Volume 174, Number 3 (March 1959), page 132.
  • * 1959 March, Howard G. McEntree, “Clever New Gadgets Run on Flashlight Batteries”, in Popular Science , Volume 174, Number 3, page 132:
    • Slim Universal model at center for about $17 runs on four AA penlites .

    References