| dalto |
| dalton | (n) English chemist and physicist who formulated atomic theory and the law of partial pressures; gave the first description of red-green color blindness (1766-1844), Syn. John Dalton |
| dalton's law | (n) (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture equals the pressure it would exert if it occupied the same volume alone at the same temperature, Syn. Dalton's law of partial pressures, law of partial pressures |
| Dalton | n. |
| dalton | n. [ from the chemist |
| Daltonian | n. One afflicted with color blindness. [ 1913 Webster ] |
| Daltonism | n. Inability to perceive or distinguish certain colors, esp. red; color blindness. It has various forms and degrees. So called from the chemist |