from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An instrument used to determine the relative hardness of a material by measuring the pressure required to penetrate the material with a standard diamond stylus.

from The Century Dictionary.

  • noun An instrument for determining with precision the degree of hardness of a mineral.

from the GNU version of the Collaborative International Dictionary of English.

  • noun An instrument for determining with accuracy the degree of hardness of a mineral.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A device used to measure the hardness of a material by applying pressure to a moving diamond stylus

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a measuring instrument that measures the hardness of materials by penetrating them with a stylus that has a diamond point


Sorry, no etymologies found.


Help support Wordnik (and make this page ad-free) by adopting the word sclerometer.


  • Concrete test hammers, known as sclerometer model "N", are not appropriate, as the impact energy is too high.

    Chapter 4 1991

  • The range of measurements should be from 0 to 500 or 800 N, which corresponds to a sclerometer known as model "PT".

    Chapter 4 1991

  • The surface hardness of a block can also be measured in a non-destructive way, using a pendulum sclerometer.

    Chapter 4 1991


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