You searched for: “abrasive
abrasive
A substance used for cutting and polishing or for removing small amounts of the surface of hard materials.

There are two types: natural and artificial abrasives, and their hardness is measured using the Mohs scale (available in this list), a scale used to measure the hardness of minerals, with talc at zero and diamond at ten. Each mineral on the scale is hard enough to scratch the one below it in the scale.

This entry is located in the following unit: Geology or Related Geological Terms + (page 1)
Word Entries at Word Info: “abrasive
abrasive (s) (noun), abrasives (pl)
1. A scraping or grinding material: Natalie was told that sandpaper, or some other abrasive, would be needed to remove the old paint.
2. A substance used for rubbing or polishing: The cabinetmaker recommended an abrasive that used only natural materials for use on the wooden furniture.

When Glenda went to the store, she noticed that there were at least three kinds of abrasives from which to choose for her home improvement project.

This entry is located in the following units: a-, ab-, abs- (page 7) rad-, ras-, raz- (page 1)
abrasive (adjective), more abrasive, most abrasive
1. Harsh, irritating, or caustic: The politician's abrasive remarks angered the audience with some of them yelling their own abrasive comments back at him.
2. Describing something that scrapes; rough or scratchy: William was advised to use sandpaper or some other abrasive material to remove the paint from the chairs before painting them again.

The abrasive effect of sandpaper on the wood made it smooth and easy to paint on.

3. A reference to something that is harsh, irritating, or rude: When the talk-show host used abrasive remarks, he insulted many in his radio audience.
Harsh, rough.
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This entry is located in the following units: a-, ab-, abs- (page 8) rad-, ras-, raz- (page 1)