/v. ɪmˈprɛssing; n. ˈɪmprɛssing/  noun verb (used with object) in present continuous form.

1. to affect deeply or strongly in mind or feelings; influence in opinion: He impressed us as a professional presenter.

2. to fix deeply or firmly on the mind or memory, as ideas or facts: to impress the importance of your product's benefits on a potential customer.

3. to urge, as something to be remembered or done: She impressed the need for action on them.

The same as the above, but with unique presentations and prezi :)