con·cen·trate

[kon-suhn-treyt] verb, con·cen·trat·ed, con·cen·trat·ing, noun
verb (used with object)
1.
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.
2.
to put or bring into a single place, group, etc.: The nation's wealth had been concentrated in a few families.
3.
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.
4.
Mining. to separate (metal or ore) from rock, sand, etc., so as to improve the quality of the valuable portion.
verb (used without object)
5.
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.
6.
to come to or toward a common center; converge; collect: The population concentrated in one part of the city.
7.
to become more intense, stronger, or purer.
00:10
Concentrate is one of our favorite verbs.
So is yaff. Does it mean:
to bark; yelp.
to flee; abscond:
noun
8.
a concentrated form of something; a product of concentration: a juice concentrate.

Origin:
1630–40; concentr(ic) + -ate2; compare French concentrer, Italian concentrare

con·cen·tra·tive [kon-suhn-trey-tiv, kuhn-sen-truh-] , adjective
con·cen·tra·tive·ness, noun
con·cen·tra·tor, noun
non·con·cen·tra·tive, adjective
non·con·cen·tra·tive·ness, noun
o·ver·con·cen·trate, verb, o·ver·con·cen·trat·ed, o·ver·con·cen·trat·ing.
pre·con·cen·trate, noun, verb, pre·con·cen·trat·ed, pre·con·cen·trat·ing.
re·con·cen·trate, verb, re·con·cen·trat·ed, re·con·cen·trat·ing.
un·con·cen·tra·tive, adjective


1. See contract.


1. dissipate, disperse. 5. diverge.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
concentrate (ˈkɒnsənˌtreɪt) [Click for IPA pronunciation guide]
 
vb (often foll by on)
1.  to come or cause to come to a single purpose or aim: to concentrate one's hopes on winning
2.  to make or become denser or purer by the removal of certain elements, esp the solvent of a solution
3.  (tr) to remove rock or sand from (an ore) to make it purer
4.  to bring one's faculties to bear (on); think intensely (about)
 
n
5.  a concentrated material or solution: tomato concentrate
 
[C17: back formation from concentration, ultimately from Latin com- same + centrumcentre]
 
'concentrator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

concentrate
1640, from concenter (1591), from It. concentrare, from L. com- "together" + centrum "center" (see center). Originally "to bring or come to a common center;" sense of "mental focus" is mid-19c.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
Or you can concentrate the sun's rays using mirrors, boil water with them, and
  employ the steam to drive a generator.
She will continue to look for a new space but in the meantime will concentrate
  on her catering business.
The only way to stop the madness is to abandon the growth economy model and
  concentrate on a sustainable future.
Concentrate more on being a good teacher than on impressing the observer.
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