n. 1. The act of installing; installation. [ 1913 Webster ]

Take oaths from all kings and magistrates at their installment, to do impartial justice by law. Milton. [ 1913 Webster ]

2. The seat in which one is placed. [ Obs. ] [ 1913 Webster ]

The several chairs of order, look, you scour; . . .
Each fair installment, coat, and several crest
With loyal blazon, evermore be blest. Shak. [ 1913 Webster ]

3. A portion of a debt, or sum of money, which is divided into portions that are made payable at different times; that portion of a debt payed back in any one payment; as, the next installment is due January first. Payment by installment is payment by parts at different times, the amounts and times being often definitely stipulated. Bouvier. [ 1913 Webster +PJC ]

4. a part of a broadcast serial. [ wns=1 ]
Syn. -- episode. [ WordNet 1.5 ]

5. a part of a published serial. [ wns=2 ] [ WordNet 1.5 ]