[ lab-ruh-daw-rahyt, lab-ruh-dawr-ahyt ]
/ ˈlæb rə dɔˌraɪt, ˌlæb rəˈdɔr aɪt /


a feldspar mineral of the plagioclase group, often characterized by a brilliant change of colors, with blue and green most common.

Origin of labradorite

1805–15; named after Labrador, where first discovered; see -ite1

Related forms

lab·ra·dor·it·ic [lab-ruh-daw-rit-ik] /ˌlæb rə dɔˈrɪt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for labradorite

British Dictionary definitions for labradorite


/ (ˌlæbrəˈdɔːraɪt) /


a blue, green, or reddish-brown feldspar mineral of the plagioclase series: used as a decorative stone. Formula: CaAl 2 Si 2 O 8 .NaAlSi 3 O 8

Word Origin for labradorite

C18: named after Labrador, where it was found; see -ite 1
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 labradorite


[ lăbrə-dôr′īt′, -dô-rīt′ ]

A blue, gray, green, or brown triclinic mineral that is a variety of plagioclase feldspar. It occurs in igneous rocks.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.