[ prop-uh-lahyt ]
/ ˈprɒp əˌlaɪt /

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

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

British Dictionary definitions for propylite

/ (ˈprɒpɪˌlaɪt) /


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