01 n. A vitreous form of basalt; -- so called because decomposable by acids and readily fusible.
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1.
A vitreous form of basalt; -- so called because decomposable by acids and readily fusible.(Min.)
Entry
1 sense
Webster, 1913
Tachylyte
· Tach·y·lyte
· IPA /ˈtæk.əˌlaɪt/