stimul-

Excessive stimulation of a bodily organ or part.

An agent with both narcotic and stimulant properties.

An agent (medical drug) with antidepressant or mood-elevating properties.

1. A drug or other agent that produces a temporary increase in the functional activity of a body organ or part.
2. Producing stimulation; especially producing stimulation by causing tension on muscle fiber through the nervous tissue.
3. Causing stimulation of nervous tissue or, indirectly, muscle tissue.
4. An agent or remedy that produces stimulation (incentive or quickening reaction).

Medications which increase heart rate, breathing rate, and brain function.

Some stimulants affect only a specific organ; such as, the heart, lungs, brain, or nervous system.

To excite in a manner that, if of sufficient magnitude, can elicit activity.

The process or act of exciting to produce some form of functional activity.