transitive verb demonstrated, demonstrating
- to show by reasoning; prove
- to explain or make clear by using examples, experiments, etc.
- to show the operation or working of; specif., to show (a product) in use in an effort to sell it
- to show (feelings) plainly
< L demonstratus, pp. of demonstrare, to point out, show < de-, out, from + monstrare, to show: see muster