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troostite

[troo-stahyt]

noun

a microconstituent of hardened and tempered steel, consisting of a very fine aggregate of ferrite and cementite.

Origin:
1900–05; named after L. J. Troost (died 1911), French chemist; see -ite¹

Related forms

troost·it·ic

[troo-stit-ik] , adjective

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Troostite is always a great word to know.

So is doohickey. Does it mean:

a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.

a gadget; dingus; thingumbob.

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Collins

World English Dictionary

troostite (ˈtruːstaɪt)

—n
	a reddish or greyish mineral that is a variety of willemite in which some of the zinc is replaced by manganese

[C19: named after Gerard Troost (died 1850), US geologist]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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troostite

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