Concentrate (? 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.
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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.
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concentrated adj.
1. Having a high density of (the indicated substance); as, “a narrow thread of concentrated ore”. [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. [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”.
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4. being the most concentrated solution possible at a given temperature; unable to dissolve still more of a substance. Opposite of dilute or unsaturated. [Narrower terms: supersaturated]
Syn. -- saturated.
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5. reduced to a stronger or more concentrated form; as, “concentrated sulfuric acid”. Opposite of diluted.
Syn. -- condensed.
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6. characterized by intensity; especially when imposed from without; -- of actions; as, “concentrated study”.
Syn. -- intensive.
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7. characterized by mental concentration.
Syn. -- intent.
[WordNet 1.5 +PJC]