from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A yellowish-brown nickel iron sulfide that is the principal ore of nickel.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mixed iron and nickel sulfide mineral, with the chemical formula (Fe,Ni)9S8; the major ore of nickel.
from The Century Dictionary and Cyclopedia
- n. A sulphid of nickel and iron, occurring in massive forms of a light bronze-yellow color and metallic luster.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mineral (iron and nickel sulphide) that is the chief ore of nickel
French, after Joseph Barclay Pentland (1797-1873), Irish scientist.(American Heritage® Dictionary of the English Language, Fourth Edition)