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spherulite

[sfer-oo-lahyt, -yoo-, sfeer-]

noun

Petrology.

  1. a rounded aggregate of radiating crystals found in obsidian and other glassy igneous rocks.

spherulite

/ ˌsfɛrʊˈlɪtɪk, ˈsfɛrʊˌlaɪt /

noun

  1. any of several spherical masses of radiating needle-like crystals of one or more minerals occurring in rocks such as obsidian

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Other Word Forms

  • spherulitic adjective
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Word History and Origins

Origin of spherulite1

First recorded in 1815–25; spherule + -ite 1

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spherulesphery

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