n. [ Cf. F. concentration. ] 1. The act or process of concentrating; the process of becoming concentrated, or the state of being concentrated; concentration. [ 1913 Webster ]
Concentration of the lunar beams. Boyle. [ 1913 Webster ]
Intense concetration of thought. Sir J. Herschel. [ 1913 Webster ]
2. The act or process of reducing the volume of a liquid, as by evaporation. [ 1913 Webster ]
The acid acquires a higher degree of concentration. Knight. [ 1913 Webster ]
3. (Metal.) 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. [ 1913 Webster ]
[浓度 / 濃度, nóng dù, ㄋㄨㄥˊ ㄉㄨˋ]concentration (percentage of dissolved material in a solution); consistency; thickness; density; viscosity#3597[Add to Longdo]
[あそぶ(P);あすぶ(ok), asobu (P); asubu (ok)](v5b, vi) (1) to play; to enjoy oneself; to have a good time; (2) to mess about (with alcohol, gambling, philandery, etc.); (3) to be idle; to do nothing; to be unused; (4) (as 〜に遊ぶ) to go to (for pleasure or for study); (5) (in baseball) to intentionally throw a ball to lower the batter's concentration; (P)#13143[Add to Longdo]