(im·pres′) v.t.
1. To produce a marked effect upon, as the mind; influence: His proposal impressed me.
2. To fix firmly in the mind, as ideas, beliefs, etc.: to impress a fact on the memory.
3. To form or make (an imprint or mark) by pressure; stamp: to impress a design on metal.
4. To form or make an imprint or mark upon.
5. To apply with pressure; press: to impress one's hand into the mud.
6. Electr. To create or establish (a difference of potential) in a conductor by means of a dynamo, battery, or other source of electrical energy.
—noun (im′pres)
1. A mark or indentation produced by pressure.
2. The effect of a force.
3. The act or process of making an impression.
4. Peculiar character or form; stamp. [<L impressus, pp. of imprimere impress <in- on + premere press] Synonyms (verb): imprint, inculcate, press, print, stamp. Antonyms: see synonyms for CANCEL.

(im·pres′) v.t.
1. To compel to enter public service: to impress seamen.
2. To seize (property) for public use.
—noun Impressment. [<IM- in + PRESS¹]
—im·press′er noun