tachylyte
or tach·y·lite
[ tak-uh-lahyt ]
/ Ë?tæk əˌlaɪt /
Save This Word!
noun Petrography.
a black, glassy form of basalt, readily fusible and of a high luster.
QUIZZES
QUIZ YOURSELF ON PARENTHESES AND BRACKETS APLENTY!
Set some time apart to test your bracket symbol knowledge, and see if you can keep your parentheses, squares, curlies, and angles all straight!
Question 1 of 7
Let’s start with some etymology: What are the origins of the typographical word “bracket�
First appeared around 1750, and is related to the French word “braguette†for the name of codpiece armor.
First appeared in 1610, based on the French word “baguette†for the long loaf of bread.
First appeared in 1555, and is related to the French word “raquette†for a netted bat.
TAKE THE QUIZ TO FIND OUT 
Meet Grammar Coach
Improve Your Writing
OTHER WORDS FROM tachylyte
tach·y·lit·ic [tak-uh-lit-ik], /ËŒtæk É™Ë?lɪt ɪk/, adjectiveWords nearby tachylyte
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for tachylyte
tachylyte
tachylite
/ (Ë?tækɪˌlaɪt) /
noun
a black basaltic glass often found on the edges of intrusions of basalt
Derived forms of tachylyte
tachylytic (ËŒtækɪË?lɪtɪk) or tachylitic, adjectiveWord 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
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