[dem-uh
n-streyt] 
verb, -strat⋅ed, -strat⋅ing.| 1. | to make evident or establish by arguments or reasoning; prove: to demonstrate a philosophical principle. |
| 2. | to describe, explain, or illustrate by examples, specimens, experiments, or the like: to demonstrate the force of gravity by dropping an object. |
| 3. | to manifest or exhibit; show: He demonstrated his courage by his actions in battle. |
| 4. | to display openly or publicly, as feelings: to demonstrate one's anger by slamming a door. |
| 5. | to exhibit the operation or use of (a device, process, product, or the like), usually to a purchaser or prospect: to demonstrate an automobile. |
| 6. | to make, give, or take part in, a demonstration: The pickets required a license to demonstrate. |
| 7. | Military. to attack or make a show of force to deceive an enemy. |