penetrometer
☆
noun
- an instrument used to measure the hardness of a substance by inserting a needle into the substance in a prescribed manner
- an instrument that measures the penetrating power of X-rays
See penetrometer in American Heritage Dictionary 4
(pĕnˌĭ-trŏmˈĭ-tər) also pen·e·tram·e·ter (-trămˈĭ-tər)
noun- A device for measuring the penetrating power of radiation, especially x-rays.
- A device for measuring the penetrability of semisolids.
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