penetrameter

Science Dictionary
penetrometer (pěn'ĭ-trŏm'ĭ-tər) also penetrameter   (pěn'ĭ-trŏm'ĭ-tər)  Pronunciation Key 
  1. A device for measuring the penetrating power of electromagnetic radiation, especially x-rays.

  2. A device for measuring the denseness, compaction, or penetrability of a substance, such as soil, agricultural produce, or semisolid petroleum products. A penetrometer typically measures the resistance of the substance to penetration to a given depth by a weight-driven cone or needle of a given shape.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Penetrameter is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a scrap or morsel of food left at a meal.
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