che·mo·tax·is (kē'mō-tāk'sĭs, kěm'ō-) n. The characteristic movement or orientation of an organism or cell along a chemical concentration gradient either toward or away from the chemical stimulus. che'mo·tac'tic (-tāk'tĭk) adj., che'mo·tac'ti·cal·ly adv.
Main Entry: che·mo·tax·is Pronunciation: -'tak-s&s Function: noun Inflected Form: pluralche·mo·tax·es/-"sEz/ : orientation or movement of an organism or cell in relation to chemical agents
chemotaxis che·mo·tax·is (kē'mō-tāk'sĭs, kěm'ō-) n. The characteristic movement or orientation of an organism or cell along a chemical concentration gradient either toward or away from the chemical stimulus. Also called chemotropism.