Shorthand for a page of search engine listings, typically the first page of organic results.
You’ll typically see this acronym on webmaster forums where repeatedly typing Search Engine Results Page is too cumbersome. Usually related to a website’s ranking in the first page of organic search results.
The term SERP is often used in SEO circles and other Webmaster forums for brevity. Technically, SERP refers to ALL search results for a given query. However, SEO and SEM practitioners use the term to refer only to the first page of search results. Moreover, the term typically refers solely to organic search results.
see also: SEO Tools