concentrate

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To direct or draw toward a common center; focus.
2. v. To bring into one main body: Authority was concentrated in the president.
3. v. To make (a solution or mixture) less dilute.
4. v. To converge toward or meet in a common center.
5. v. To increase by degree; gather: "Dusk began to concentrate into full night” ( Anthony Hyde).
6. v. To direct one's thoughts or attention: We concentrated on the task before us.
7. n. A product that has been concentrated, especially a food that has been reduced in volume or bulk by the removal of liquid: pineapple juice concentrate.

Century Dictionary and Cyclopedia

1. . To bring or draw to a common center or point of union; cause to come close together; bring to bear on one point; direct toward one object; focus: both in literal and in figurative uses.
2. Hence To intensify the action of, as by bringing it to bear upon one point; render more intense the properties of, as by removing foreign weakening or adulterating elements; specifically, in chem., to render more intense or pure by removing or reducing the proportion of what is foreign or inessential; rectify.
3. In mining, to separate (ore or metal) from the gangue or rock with which it is associated in the lode. See dress, 5 .
4. To approach or meet in or around a common point or center: as, the clouds rapidly concentrated in a dense mass.
5. To become more intense or pure. See I., 2.
6. Reduced to a pure or intense state; concentrated.
7. n. That which has been reduced to a state of purity or concentration by the removal of foreign, non-essential, or diluting matter.

Wiktionary

1. v. transitive , (intransitive) To bring to, or direct toward, a common center; to unite more closely; to gather into one body, mass, or force.
2. v. 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; -- opposed to dilute.
3. v. To approach or meet in a common center; to consolidate.
4. v. intransitive To focus one's thought or attention (on).
5. n. A substance that is in a condensed form.

GNU Webster's 1913

1. v. To bring to, or direct toward, a common center; to unite more closely; to gather into one body, mass, or force; to fix.
2. v. 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; ; -- opposed to dilute.
3. v. To approach or meet in a common center; to consolidate.

WordNet 3.0

1. n. the desired mineral that is left after impurities have been removed from mined ore
2. v. make central
3. v. make more concise
4. n. a concentrated example of something
5. v. be cooked until very little liquid is left
6. v. cook until very little liquid is left
7. v. direct one's attention on something
8. v. draw together or meet in one common center
9. n. a concentrated form of foodstuff; the bulk is reduced by removing water
10. v. compress or concentrate
11. v. make denser, stronger, or purer