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-grad·ed, high-grad·ing.

1. to steal (rich ore) from a mine.

Other Words From

• high-grader noun

Word History and Origins

Origin of high-grade¹

First recorded in 1875–80

Example Sentences

"Whether it's possible to have integrated scenarios that maintain a high-grade fusion plasma with these specific flows of excess fuel and ash from the plasma needs to be determined," Schwartz said.

From Science Daily

By the mid '80s he was believed to be the most prolific high-grade hashish smuggler in the business, importing thousands of tonnes of cannabis into the UK and US.

From BBC

Canada, rich with high-grade deposits, could become a nuclear “superpower”.

From BBC

There is only “weak evidence” that high-grade face masks better protected health workers than surgical ones in the pandemic, the Covid inquiry has been told.

From BBC

In recent years, however, the depletion and rising price of high-grade phosphorus ores have become a problem, putting pressure on industries that rely on these supplies.

From Science Daily

Related Words

• state-of-the-art
• top-of-the-line