tachylyte

or tach·y·lite

[ tak-uh-lahyt ]
/ ˈtæk əˌlaɪt /

noun Petrography.

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

Origin of tachylyte

First recorded in 1865–70; tachy- + -lyte2

OTHER WORDS FROM tachylyte

tach·y·lit·ic [tak-uh-lit-ik] /ˌtæk əˈlɪt ɪk/, adjective

British Dictionary definitions for tachylyte

tachylyte

tachylite

/ (ˈtækɪˌlaɪt) /

noun

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

Derived forms of tachylyte

tachylytic (ˌtækɪˈlɪtɪk) or tachylitic, adjective

Word Origin for tachylyte

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