Pitchstone Definition

pĭchstōn
noun
A volcanic glass that somewhat resembles pitch and has a higher percentage of water than obsidian or other glassy rocks.
Webster's New World

(geology) A natural glass, rich in microscopic crystallites, formed by the rapid cooling of lava or magma.

Wiktionary

Other Word Forms of Pitchstone

Noun

Singular:
pitchstone
Plural:
pitchstones

Origin of Pitchstone

  • Translation of German Pechstein

    From American Heritage Dictionary of the English Language, 5th Edition

  • pitch +"Ž stone

    From Wiktionary

Pitchstone Sentence Examples

  • In Arran there are pitchstone dikes, some of which are very completely vitreous, while others are changed to spherulitic felsites more or less silicified.

  • The pitchstone of the Scuir of Eigg is at its margins characterized by a dull semi-opaque matrix which seems to be the result of secondary devitrification.

  • In the south of the island there are sills and dykes of felsite, quartz-porphyry, rhyolite, trachyte and pitchstone.

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Words Starting With

PPIPIT

Words Ending With

ENEONE

Unscrambles

pitchstone

Words Starting With P and Ending With E

Starts With P & Ends With EStarts With PI & Ends With EStarts With P & Ends With NE

Word Length

10 Letter Words10 Letter Words Starting With P10 Letter Words Ending With E