greenstone

[ green-stohn ]

/ ˈgrinˌstoʊn /

noun

any of various altered basaltic rocks having a dark-green color caused by the presence of chlorite, epidote, etc.

Nearby words

greensickness, greenskeeper, greensome, greenspan, greenstick fracture, greenstone, greenstrip, greenstuff, greensward, greenth, greenville

Origin of greenstone

First recorded in 1765–75; green + stone

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for greenstone

In this spot the position of the Serpentine upon Greenstone is very apparent.
A Guide to the Mount's Bay and the Land's End|John Ayrton Paris
They valued it chiefly as the home of their much-prized jade or greenstone.
The Long White Cloud|William Pember Reeves
Greenstone is an excellent rock, and has a fine surface, but it is unmanageable.
The Poetry of Architecture|John Ruskin
They consisted of greenstone, sandstone, and limestone; the first mentioned being the largest, and the last the most numerous.
Narrative of a Second Expedition to the Shores of the Polar Sea|John Franklin

Greenstone Ridge, like the backbone of a very lean horse, runs the entire length of Isle Royale.
The Phantom Violin|Roy J. Snell

British Dictionary definitions for greenstone

greenstone

/ (ˈɡriːnˌstəʊn) /

noun

any basic igneous rock that is dark green because of the presence of chlorite, actinolite, or epidote

a variety of jade used in New Zealand for ornaments and tools

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

Science definitions for greenstone

greenstone

[ grēn′stōn′ ]

Any of various green metamorphic rocks formed from igneous rocks that have a relatively low silica content and owe their color to the presence of a green mineral such as chlorite, hornblende, or epidote.