The term "PR" can have different meanings depending on the context. Here are the most common full forms of "PR" based on the search results:

1. Payroll: PR can stand for "payroll," which refers to the list of employees who receive compensation from a company.

2. Personal Record: PR can also stand for "personal record," which is a term used in sports to refer to an athletes best performance in a particular event.

3. Public Relations: PR most commonly stands for "public relations," which is the set of techniques and strategies related to managing how information about an individual or company is disseminated to the public, especially the media. The primary goals of PR are to disseminate important company news or events, maintain a brand image, and put a positive spin on negative events to minimize their fallout. PR may occur in the form of a company press release, news conference, interviews with journalists, social media posting, or other venues. PR is different from advertising or marketing as it’s often meant to look organic and may not necessarily try to promote a product or service.