What is 360 degree appraisal ?

A  degree appraisal is a type of employee performance review in which subordinates, co-workers, and managers all anonymously rate the employee. This information is then incorporated into that person's performance review.

In a degree appraisal, a staff member's work for a specific period of time, often a year, is discussed and critiqued by other employees.

The degree process is different in that it obtains feedback from co-workers and subordinates instead of just from the direct supervisor. The goal of the process is to better understand how the employee is functioning as part of the team and to improve the ways team members work together.

degree is feed back from the subordinates of the any manager or supervisor and its have a separate portion for the each department(area under the supervision)  

  degree feed back also known as multi rater feedback, multi source feedback, is the feedback that comes from members of an employee's immediate work circle. Most often,-degree feedback will include direct feedback from an employee's subordinates, peers (colleagues), and supervisor(s), as well as a self-evaluation. It can also include, in some cases, feedback from external sources, such as customers and suppliers or other interested stakeholders. It may be contrasted with "upward feedback," where managers are given feedback only by their direct reports, or a "traditional performance appraisal," where the employees are most often reviewed only by their managers.