tridymite

[ trid-uh-mahyt ]
/ ˈtrɪd əˌmaɪt /

noun Mineralogy.

a polymorph of quartz occurring in the form of small crystals, commonly twinned, in siliceous volcanic rocks.

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THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
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Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of tridymite

1865–70; <German Tridymit, equivalent to tridym- (Greek trídym(os) triple, equivalent to tri-tri- + ()dymosdidymous) + -it-ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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