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The Collaborative International Dictionary of English v.0.48 (gcide)

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}.
[1913 Webster]

Spirit of vinegar concentrated and reduced to its
greatest strength. --Arbuthnot.

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


concentrated \concentrated\ adj.
1. Having a high density of (the indicated substance); as, a
narrow thread of concentrated ore.

Note: [Narrower terms: {undiluted} (vs. diluted)]
[WordNet 1.5]

2. Gathered together or made less diffuse; as, their
concentrated efforts; his concentrated attention. Opposite
of {distributed} or {diffused}.

Note: [Narrower terms: {bunched}, {bunchy}, {clustered};
{centered}, {centred}, {centralized}, {focused};
{undivided}] [Also See: {compact}.]
[WordNet 1.5]

3. Intense; in an extreme degree; -- of mental phenomena; as,
her concentrated passion held them at bay.
[WordNet 1.5]

4. being the most concentrated solution possible at a given
temperature; unable to dissolve still more of a substance.
Opposite of {dilute} or {unsaturated}.

Note: [Narrower terms: {supersaturated}]

Syn: saturated.
[WordNet 1.5]

5. reduced to a stronger or more concentrated form; as,
concentrated sulfuric acid. Opposite of {diluted}.

Syn: condensed.
[WordNet 1.5]

6. characterized by intensity; especially when imposed from
without; -- of actions; as, concentrated study.

Syn: intensive.
[WordNet 1.5]

7. characterized by mental concentration.

Syn: intent.
[WordNet 1.5 PJC]