of excellent or superior quality.
(of ore) yielding a relatively large amount of the metal for which it is mined.

verb (used with object), high-grad·ed, high-grad·ing.

to steal (rich ore) from a mine.

Origin of high-grade

First recorded in 1875–80
Related formshigh-grad·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for high-grade

Contemporary Examples of high-grade

  • But no one in his camp was prepared for the high-grade vitriol his latest movie summoned.

    The Daily Beast logo
    Tom Cruise's Failed Comeback

    Gina Piccalo

    June 28, 2010

Historical Examples of high-grade

  • The ten sacks of high-grade ore had been stolen during the night!

  • It is a high-grade package coffee, whereas Ariosa is popular-priced.

    All About Coffee

    William H. Ukers

  • These men all thought they knew something about high-grade feeble-mindedness.

    The Criminal Imbecile

    Henry Herbert Goddard

  • The real problem is: Has he had experience with this high-grade type?

    The Criminal Imbecile

    Henry Herbert Goddard

  • Not one of them had had experience with the high-grade type.

    The Criminal Imbecile

    Henry Herbert Goddard