A lot vs. Alot: 9 Grammatical Pitfalls


[kon-suh n-treyt] /ˈkɒn sənˌtreɪt/
verb (used with object), concentrated, concentrating.
to bring or draw to a common center or point of union; converge; direct toward one point; focus:
to concentrate one's attention on a problem; to concentrate the rays of the sun with a lens.
to put or bring into a single place, group, etc.:
The nation's wealth had been concentrated in a few families.
to intensify; make denser, stronger, or purer, especially by the removal or reduction of liquid:
to concentrate fruit juice; to concentrate a sauce by boiling it down.
Mining. to separate (metal or ore) from rock, sand, etc., so as to improve the quality of the valuable portion.
verb (used without object), concentrated, concentrating.
to bring all efforts, faculties, activities, etc., to bear on one thing or activity (often followed by on or upon):
to concentrate on solving a problem.
to come to or toward a common center; converge; collect:
The population concentrated in one part of the city.
to become more intense, stronger, or purer.
a concentrated form of something; a product of concentration:
a juice concentrate.
1630-40; concentr(ic) + -ate2; compare French concentrer, Italian concentrare
Related forms
[kon-suh n-trey-tiv, kuh n-sen-truh-] /ˈkɒn sənˌtreɪ tɪv, kənˈsɛn trə-/ (Show IPA),
concentrativeness, noun
concentrator, noun
nonconcentrative, adjective
nonconcentrativeness, noun
overconcentrate, verb, overconcentrated, overconcentrating.
preconcentrate, noun, verb, preconcentrated, preconcentrating.
reconcentrate, verb, reconcentrated, reconcentrating.
unconcentrative, adjective
1. See contract.
1. dissipate, disperse. 5. diverge. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for concentrating
  • The one way to see cotton is to have a design concentrating the illusion and the illustration.
  • On that note he took me around the vast building, concentrating on anthropology, his own area.
  • Instantaneously one is taken out of whatever it was one was concentrating on and injected into a much larger world.
  • concentrating solar power technology is another application of solar heating.
  • Populations are concentrating along the world's coastlines-particularly in large urban areas.
  • They were not bothered about my presence but concentrating on their makeup and costumes.
  • Solar ovens cook food by concentrating the sun's rays on a cooking vessel to heat it.
  • So far experts have been concentrating on studying the page that was left exposed.
  • Take a walk through your community, concentrating on all of the sounds that you hear.
  • concentrating on the pictures instead of the equipment is the path to sanity here.
British Dictionary definitions for concentrating


to come or cause to come to a single purpose or aim: to concentrate one's hopes on winning
to make or become denser or purer by the removal of certain elements, esp the solvent of a solution
(transitive) to remove rock or sand from (an ore) to make it purer
(intransitive) often foll by on. to bring one's faculties to bear (on); think intensely (about)
a concentrated material or solution: tomato concentrate
Derived Forms
concentrator, noun
Word Origin
C17: back formation from concentration, ultimately from Latin com- same + centrumcentre
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
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Word Origin and History for concentrating



1630s, "to bring or come to a common center," from concenter (1590s), from Italian concentrare, from Latin com- "together" (see com-) + centrum "center" (see center). Meaning "condense" is from 1680s. Sense of "mentally focus" is c.1860. Related: Concentrated; concentrating.


1883, from concentrate (v.).

Online Etymology Dictionary, © 2010 Douglas Harper
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