high-grade

[hahy-greyd]
adjective
1.
of excellent or superior quality.
2.
(of ore) yielding a relatively large amount of the metal for which it is mined.
verb (used with object), high-graded, high-grading.
3.
to steal (rich ore) from a mine.

Origin:
1875–80

high-grader, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To highgrade
Example sentences for highgrade
Specialty, highgrade car wheels of magnesium alloy are called mag wheels.
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