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Knoop scale

[ noop ]
/ nup /
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noun
a scale of hardness based on the indentation made in the material to be tested by a diamond point.
QUIZ
QUIZ YOURSELF ON "IS" VS. "ARE"
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?

Origin of Knoop scale

Named after F. Knoop, 20th-century American chemist

Words nearby Knoop scale

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use Knoop scale in a sentence

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