Webster
✕

Webster’s Revised Unabridged Dictionary · 1913

Concentration

Con′cen·tra′tion (kŏn′sĕn·trā′shŭn), n. [Cf. F. concentration.] 1. The act or process of concentrating; the process of becoming concentrated, or the state of being concentrated; concentration.

Concentration of the lunar beams. Boyle.

Intense concetration of thought. Sir J. Herschel.

2. The act or process of reducing the volume of a liquid, as by evaporation.

The acid acquires a higher degree of concentration. Knight.

3. (Metal.) The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty.