concentrate
    n 1: the desired mineral that is left after impurities have been
         removed from mined ore [syn: dressed ore, concentrate]
    2: a concentrated form of a foodstuff; the bulk is reduced by
       removing water
    3: a concentrated example of something; "the concentrate of
       contemporary despair"
    v 1: make denser, stronger, or purer; "concentrate juice"
    2: direct one's attention on something; "Please focus on your
       studies and not on your hobbies" [syn: concentrate,
       focus, center, centre, pore, rivet]
    3: make central; "The Russian government centralized the
       distribution of food" [syn: centralize, centralise,
       concentrate] [ant: decentralise, decentralize,
       deconcentrate]
    4: make more concise; "condense the contents of a book into a
       summary" [syn: digest, condense, concentrate]
    5: draw together or meet in one common center; "These groups
       concentrate in the inner cities"
    6: compress or concentrate; "Congress condensed the three-year
       plan into a six-month plan" [syn: condense, concentrate,
       contract]
    7: be cooked until very little liquid is left; "The sauce should
       reduce to one cup" [syn: boil down, reduce, decoct,
       concentrate]
    8: cook until very little liquid is left; "The cook reduced the
       sauce by boiling it for a long time" [syn: reduce, boil
       down, concentrate]

Concentrate \Con*cen"trate\ (? or ?), v. t. [imp. & p. p.
   Concentrated; p. pr. & vb. n. Concentrating.] [Pref. con-
   + L. centrum center. Cf. Concenter.]
   1. To bring to, or direct toward, a common center; to unite
      more closely; to gather into one body, mass, or force; to
      fix; as, to concentrate rays of light into a focus; to
      concentrate the attention.
      [1913 Webster]

            (He) concentrated whole force at his own camp.
                                                  --Motley.
      [1913 Webster]

   2. To increase the strength and diminish the bulk of, as of a
      liquid or an ore; to intensify, by getting rid of useless
      material; to condense; as, to concentrate acid by
      evaporation; to concentrate by washing; -- opposed to
      dilute.
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            Spirit of vinegar concentrated and reduced to its
            greatest strength.                    --Arbuthnot.

   Syn: To combine; to condense; to consolidate.
        [1913 Webster]

Concentrate \Con*cen"trate\ (? or ?), v. i.
   To approach or meet in a common center; to consolidate; as,
   population tends to concentrate in cities.
   [1913 Webster]