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| pertaining to an aromatic compound, which contains one or more benzene or equivalent heterocyclic rings: many such compounds have an agreeable odor |
| to remove impurities from a gas by chemical means, as sulfur dioxide from smokestack gas or carbon dioxide from exhaled air in life-support packs |
| vinyl group | |
noun | |
| a univalent chemical radical derived from ethylene [syn: vinyl] |