1) Dents 2) Images 3) Imitation 4) Percepts 5) Takes 1) The first ones last 
the aggregated published or acknowledged readership numbers for all content in which a brand or organisation receives earned content (see eyeballs and opportunities to see). For web content, an impression is counted as each time some content is loaded into a browser.
[composition] `Impressions` is a jazz standard composed by John Coltrane. While Coltrane only recorded the composition once in the studio (on June 20, 1962), he recorded it many times live, beginning with his 1961 engagement at the Village Vanguard. These performances produced the third track on the 1963 album of the same name, as well as t...
Refers to the number of times a banner ad or web site page is requested from the server. (see also CTR)
Impressions:
The actual number of people who've seen a specific Web page. Impressions are much more accurate than hits when discerning how much traffic your Web page actually receives. Impressions are sometimes called 'page views.'
<dentistry> The first step in making a model of your teeth. You bite into a container filled with algenate, and the algenate hardens to produce a mold of your teeth. ... (05 Mar 2000) ... 
The number of times an advertising banner was viewed during a campaign.
Prints or marks made when an organismPrints or marks made when an organisms body has been compressed (flattened). Impressions are different from compressions because no thin organic material is left behind.
Prints or marks made when an organism’s body has been compressed (flattened). Impressions are different from compressions because no thin organic material is left behind.
Prints or marks made when an organism`s body has been compressed (flattened). Impressions are different from compressions because no thin organic material is left behind.
a mark produced on a surface by pressure
Number of homes or individuals exposed to an advertisement or group of advertisements.