In this Act, unless the context otherwise requires,―
         (a) “acting Chief Justice” means a Judge appointed under article 126 of the Constitution to perform the duties of the Chief Justice of India;
         (b) “actual service” includes―
             (i) time spent by a Judge on duty as a Judge, or in the performance of such other functions as he may, at the request of the President, undertake to discharge; and
             (ii) vacations;
         (c) “Chief Justice” means the Chief Justice of India, but does not include an acting Chief Justice;
         (d) “High Court” means the High Court for a State;
         (e) “Judge” means a Judge of the Supreme Court and includes the Chief Justice and an acting Chief Justice;
         (f) “prescribed” means prescribed by rules made under this Act;
         (g) “service as a Judge in India” means service rendered ¹ [in the Supreme Court] and in one or more of the High Courts, and “Judge in India” and “service for pension as a Judge in India” shall be construed accordingly;
         (h) “service for pension” includes―
             (i) actual service;
             (ii) time spent by a Judge of a High Court in attending the sittings of the Supreme Court as an ad hoc Judge under article 127 of the Constitution, if he is subsequently appointed as a Judge:
             ² [(iii) the amount, actually taken, of each period of leave on full allowances at a rate equal to the monthly rate of the salary;]
         (i) “vacation” means such period or periods during a year as may be fixed as vacation by or under the rules of the Supreme Court made with the prior approval of the President.