Dictionary.com

dumortierite

[ doo-mawr-tee-uh-rahyt, dyoo- ]
/ duˈmɔr ti əˌraɪt, dyu- /
Save This Word!

noun
a mineral, aluminum borosilicate.
QUIZ
QUIZ YOURSELF ON "WAS" VS. "WERE"!
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

Origin of dumortierite

1880–85; <French, named after Eugène Dumortier, 19th-century French paleontologist; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for dumortierite

dumortierite
/ (djuːˈmɔːtɪəˌraɪt) /

noun
a hard fibrous blue or green mineral consisting of hydrated aluminium borosilicate. Formula: Al 7 O 3 BO 3 (SiO 4) 3

Word Origin for dumortierite

C19: named after Eugène Dumortier, 19th-century French palaeontologist who discovered it
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
FEEDBACK