concentration
nounUK /ˌkɒn.sənˈtɹeɪ.ʃən/ · US /ˌkɑn.sənˈtɹeɪ.ʃən/
Etymology From New Latin concentrātiō (“(1550) action or an act of coming together at a single place; (1659) extraction or separation of one or more of the metals present in an alloy”). Compare French concentration, Spanish concentración, Italian concentrazione (last quarter of 16th century). Equivalent to concentrate + -ion. By surface analysis, con- + centre + -ate + -ion.
8 senses
- 1The act, process or ability of concentrating; the…
- 2The direction of attention to a specific object.
- 3The act, process or product of reducing the volume of a…
- 4The act or process of removing the dress of ore and of…
- 5A field or course of study on which one focuses…
- 6The proportion of a substance in a whole.
- 7The amount of solute in a solution measured in suitable…
- 8The matching game pelmanism.
Usually The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated.
- The Koreans Almost all the Koreans in China live in the north-eastern provinces. The greatest concentration is found in an area of approximately 1,200 square miles in Kirin Province, an area which is part of the Yen-pien Korean Autonomous Chou.1972, Leo A. Orleans, Every Fifth Child: The Population of China, Stanford, CA: Stanford University Press, →ISBN, →LCCN, →OCLC, →OL, page 117:
Usually The direction of attention to a specific object.
Usually The act, process or product of reducing the volume of a liquid, as by evaporation.
Usually The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.
Usually A field or course of study on which one focuses, especially as a student in a college or university.
Usually The proportion of a substance in a whole.
- The Koreans Almost all the Koreans in China live in the north-eastern provinces. The greatest concentration is found in an area of approximately 1,200 square miles in Kirin Province, an area which is part of the Yen-pien Korean Autonomous Chou.1972, Leo A. Orleans, Every Fifth Child: The Population of China, Stanford, CA: Stanford University Press, →ISBN, →LCCN, →OCLC, →OL, page 117:
- Surprisingly, this analysis revealed that acute exposure to solvent vapors at concentrations below those associated with long-term effects appears to increase the risk of a fatal automobile accident. Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to benzene, another solvent, which has the well-known property of causing this type of cancer.2013 July-August, Philip J. Bushnell, “Solvents, Ethanol, Car Crashes & Tolerance”, in American Scientist:
Usually The matching game pelmanism.
- Derived terms
27 terms
bioconcentration, concentrational, concentration camp, concentration cell, concentration effect, concentration table, concentration time, concentration-time curve, critical micelle concentration, cryoconcentration, deconcentration, haemoconcentration, hemoconcentration, hyperconcentration, leukoconcentration, mascon, minimum inhibitory concentration, molal concentration, molar concentration, n-firm concentration ratio, nonconcentration, overconcentration, preconcentration, radioconcentration, reconcentration, superconcentration, time of concentration- Related terms
- salinity