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| pertaining to, containing, or resembling ethyl ether |
| pertaining to compounds that are not hydrocarbons or their derivatives |
| fractional distillation | |
| —n | |
| 1. | the process of separating the constituents of a liquid mixture by heating it and condensing separately the components according to their different boiling points |
| 2. | a distillation in which the vapour is brought into contact with a countercurrent of condensed liquid to increase the purity of the final products |
| fractional distillation
A process by which a chemical compound is separated into components by distillation. In fractional distillation the compound is heated and, as each of its constituent components comes to a boil, its vapors are separated and cooled, so it can be removed in its pure form. Fractional distillation is used to refine petroleum. See also distillation. |