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2017 Word of the Year

propylite

[prop-uh-lahyt] /ˈprɒp əˌlaɪt/
noun, Petrography.
1.
a hydrothermally altered andesite or allied rock containing secondary minerals, as calcite, chlorite, serpentine, or epidote.
Origin of propylite
1867
First recorded in 1867; propyl + -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for propylite
Historical Examples
  • These consisted of rocks moderately rich in silica, and are grouped under the heads of propylite and andesite.

British Dictionary definitions for propylite

propylite

/ˈprɒpɪˌlaɪt/
noun
1.
(geology) an altered andesite or similar rock containing calcite, chlorite, etc, produced by the action of hot water
Word Origin
C20: from propylon (see propylaeum) + -ite1; so named because it is associated with the start of the Tertiary volcanic era
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
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