concentration

[kon-suh n-trey-shuh n]

noun


Origin of concentration

First recorded in 1625–35; concentr(ic) + -ation
Related formshy·per·con·cen·tra·tion, nounnon·con·cen·tra·tion, nouno·ver·con·cen·tra·tion, nounpre·con·cen·tra·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for preconcentration

concentration

noun

intense mental application; complete attention
the act or process of concentrating
something that is concentrated
the strength of a solution, esp the amount of dissolved substance in a given volume of solvent, usually expressed in moles per cubic metre or cubic decimetre (litre)Symbol: c
the process of increasing the concentration of a solution
military
  1. the act of bringing together military forces
  2. the application of fire from a number of weapons against a target
economics the degree to which the output or employment in an industry is accounted for by only a few firms
another name (esp US) for Pelmanism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for preconcentration

concentration

n.

1630s, "action of bringing to a center," noun of action from verb concentrate (v.). Meaning "a mass so collected" is from 1670s; "continuous focus of mental activity" is from 1846.

Online Etymology Dictionary, © 2010 Douglas Harper

preconcentration in Medicine

concentration

[kŏn′sən-trāshən]

n.

An increase of the strength of a pharmaceutical preparation by the extraction, precipitation, and drying of its crude active agent.
An increase in the strength of a fluid or gas in a mixture by purification, evaporation, or diffusion.
The amount of a specified substance in a unit amount of another substance.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

preconcentration in Science

concentration

[kŏn′sən-trāshən]

The amount of a particular substance in a given amount of another substance, especially a solution or mixture.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.