che·mo·tax·is 
(kē′mō-tăksĭs, kĕm′ō-)
(kē′mō-tăksĭs, kĕm′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·tactic (-tăktĭk) adj.
che′mo·tacti·cal·ly adv.
- electromagnetic radiation
- electromagnetic spectrum
- electromagnetic unit
- electromagnetic wave
- electromagnetism
- electromechanical
- electrometallurgical
- electrometallurgy
- electrometer
- electromotive
- electromotive force
- electromyogram
- electromyograph
- electromyographic
- electromyographically
- electromyography
- electron
- electron amplifier
- electron carrier
- electronegative
- electron gun
- electron hole
- electronic
- electronica
- electronically