<p><strong>Noun:</strong></p><ul><li>effecter</li><li>a person or thing that effects</li><li>an organ or cell that carries out a response to a nerve impulse</li><li>a substance, as a hormone, that increases or decreases the activity of an enzyme</li><li>end effector: The device has three arms with effectors that can grip and pick up objects</li></ul>