ore-dressing

ore dressing

noun
Metallurgy. the mechanical processes by which valuable minerals are separated from ore.

Origin:
1860–65

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
ore dressing
 
n
mineral dressing, Also called: mineral processing the first stage in the extraction of a metal from an ore in which as much gangue as possible is removed and the ore is prepared for smelting, refining, etc

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Ore-dressing is always a great word to know.
So is flibbertigibbet. Does it mean:
a scrap or morsel of food left at a meal.
a chattering or flighty, light-headed person.
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