scratch hardness

scratch hard·ness

S s

Definition of scratch hardness words

noun scratch hardness resistance of a material, as a stone or metal, to scratching by one of several other materials, the known hardnesses of which are assembled into a standard scale, as the Mohs' scale of minerals. 1

before 1925

One of the 11% newest English words

First recorded in 1925-30

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 29% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

This diagram is provided by Google Ngram Viewer

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