Union Civil Services Board Rule 2

2. The following expressions shall have the meanings given below:
(a) Officer means the service personnel at the ranks of the gazetted officer and above;
(b) Staff means the service personnel at the ranks below the gazetted officer;
(c) Initial Appointed Post means a post which shall be started according to the classes of service personnel in each and every service personnel organization;
(d) Apprentice Appointment means the appointment as an apprentice against a sanctioned post in the set-up of service personnel organization to become proficient in skills related to performing the duties;
(e) Term of Post means the period of performing duty in a current post;
(f) Term of Service means the period of performing duty as a civil servant in a service personnel organization. In this expression, the probation period, apprentice period, on leave period except extraordinary leave without pay, temporary suspension period defined as term of duty and period of performing other duty which is determined as term of duty are also included;
(g) Joining Time means the time allowed to service personnel to travel from the previous duty station to the station where they are transferred;
(h) Service Personnel on Deputation means service personnel who are transferred and provides the full-time service to another organization either in the country or in a foreign country with the permission of the Union Government, in which case the service personnel are paid from any other budget other than the State Budget;
(i) External Service Regulations mean those which are issued by the relevant ministry and organization for the service personnel on deputation to abide by;