impression

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. An effect, feeling, or image retained as a consequence of experience.
2. n. A vague notion, remembrance, or belief: I have the impression that we have met once before.
3. n. A mark produced on a surface by pressure.
4. n. The act or process of impressing.
5. n. Printing All the copies of a publication printed at one time from the same set of type.
6. n. Printing A single copy of such a printing.
7. n. A humorous imitation of the voice and mannerisms of a famous person done by an entertainer.
8. n. An initial or single coat of color or paint.
9. n. Dentistry An imprint of the teeth and surrounding tissues, formed with a plastic material that hardens into a mold for use in making dentures, inlays, or plastic models.

Century Dictionary and Cyclopedia

1. n. The act of impressing, imprinting, or stamping, or the state of being impressed or stamped.
2. n. That which is impressed, imprinted, or stamped; a mark made by or as if by pressure; a stamp; an impress.
3. n. Specifically In printing, a copy taken by pressure from type, or from an engraved or stereotyped plate or block, or from an assemblage of them.
4. n. The aggregate of copies of a printed work made at one time.
5. n. Animage; an appearance in the mind caused by something external to it.
6. n. The first and immediate effect upon the mind in outward or inward perception; sensation: as, the impressions made on the sense of touch.
7. n. Effect, especially strong effect, produced on the intellect, conscience, or feelings; the sensible result of an influence exerted from without.
8. n. A notion, remembrance, or belief, especially one that is somewhat indistinct or vague.
9. n. That which is impressed; a thing producing a mental image.
10. n. Impressing force or power.
11. n. In painting: The first coat, or ground color, laid on to receive the other colors.
12. n. A single coat or stratum of color laid upon a wall or wainscot of an apartment for ornament, or upon timber to preserve it from moisture, or upon metals to keep them from rusting.
13. n. In zoology, an impressed or sunken dot, short line, or small space on a surface.
14. n. Any method of psychological analysis which involves the presentation of stimuli to the observer and the recording of his introspective judgments.
15. n. More particularly, a method for the study of the affective processes, consisting in the presentation to the observer of a large number of stimuli, serially or in pairs, and in the recording of the affective judgments, absolute or relative, passed upon these presented stimuli: opposed, in this sense, to the method of expression.

Wiktionary

1. n. The indentation or depression made by the pressure of one object on or into another.
2. n. The overall effect of something, e.g., on a person.
3. n. A vague recalling of an event, a belief
4. n. An impersonation, an imitation of the mannerisms of another individual
5. n. An outward appearance
6. n. advertising An online advertising performance metric representing an instance where an ad is shown once

GNU Webster's 1913

1. n. The act of impressing, or the state of being impressed; the communication of a stamp, mold, style, or character, by external force or by influence.
2. n. That which is impressed; stamp; mark; indentation; sensible result of an influence exerted from without.
3. n. obsolete That which impresses, or exercises an effect, action, or agency; appearance; phenomenon.
4. n. Influence or effect on the senses or the intellect hence, interest, concern.
5. n. An indistinct notion, remembrance, or belief.
6. n. Impressiveness; emphasis of delivery.
7. n. (Print.) The pressure of the type on the paper, or the result of such pressure, as regards its appearance; ; also, a single copy as the result of printing, or the whole edition printed at a given time.
8. n. rare In painting, the first coat of color, as the priming in house painting and the like.
9. n. (Engraving) A print on paper from a wood block, metal plate, or the like.

WordNet 3.0

1. n. all the copies of a work printed at one time
2. n. a vague idea in which some confidence is placed
3. n. a clear and telling mental image
4. n. an impressionistic portrayal of a person
5. n. a symbol that is the result of printing or engraving
6. n. a concavity in a surface produced by pressing
7. n. an outward appearance
8. n. the act of pressing one thing on or into the surface of another
9. n. (dentistry) an imprint of the teeth and gums in wax or plaster