noun Petrography.

a hydrothermally altered andesite or allied rock containing secondary minerals, as calcite, chlorite, serpentine, or epidote.

Origin of propylite

First recorded in 1867; propyl + -ite1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for propylite

Historical Examples of propylite

  • These consisted of rocks moderately rich in silica, and are grouped under the heads of propylite and andesite.

British Dictionary definitions for propylite



geology an altered andesite or similar rock containing calcite, chlorite, etc, produced by the action of hot water

Word Origin for propylite

C20: from propylon (see propylaeum) + -ite 1; 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