What is the meaning of impressions in google analytics?

[kaarlealmila]

What is the meaning of impressions in google analytics?

[RH-Calvin]

An impression is counted each time your ad is shown on a search result page or other site on the Google Network. Each time your ad appears on Google or the Google Network, it's counted as one impression.

[Dam Ponting]

An impression is checked each time your promotion is appeared on an item page or other site on the Google Network. Each time your promotion shows up on Google or the Google Network, it's considered one impression. Sometimes, just a segment of your promotion might be appeared.