(40 ILCS 5/18-113) (from Ch. 108 1/2, par. 18-113)
    Sec. 18-113. Annuity. "Annuity": A series of monthly payments payable at the end of each calendar month during the life of an annuitant or as otherwise provided in this Article. The first payment shall be prorated for any fraction of a month elapsing to the end of the first month and the last payment shall be made for the whole calendar month in which death occurs.
(Source: P.A. 83-1440.)