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tachylyte

or tach·y·lite

[ tak-uh-lahyt ]

noun

, Petrography.
  1. a black, glassy form of basalt, readily fusible and of a high luster.


tachylyte

/ ˈtækɪˌlaɪt; ˌtækɪˈlɪtɪk /

noun

  1. a black basaltic glass often found on the edges of intrusions of basalt


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Derived Forms

  • tachylytic, adjective
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Other Words From

  • tach·y·lit·ic [tak-, uh, -, lit, -ik], adjective
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Word History and Origins

Origin of tachylyte1

First recorded in 1865–70; tachy- + -lyte 2
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Word History and Origins

Origin of tachylyte1

C19: from German Tachylit, from tachy- + Greek lutos soluble, melting, from luein to release; so called because it fuses easily when heated. The form tachylite is influenced by -lite stone

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