dust counter


noun

any instrument used to measure the size and number of dust particles per unit volume in the atmosphere.

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Also called nucleus counter.

Origin of dust counter

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for dust counter

  • It is not nearly so accurate as the dust-counter; but it is cheaper, more easily wrought, and more handy for quick work.

    Meteorology|J. G. M'Pherson