ordinary annuity

A series of fixed payments made at the end of each period over a fixed amount of time.

Investopedia Says:
An ordinary annuity is essentially a level stream of cash flows for a fixed period of time. Straight bond coupon payments are normally referred to as ordinary annuities.

Related Links:
Learn to calculate the present and future value of fixed payments required from you or owed to you. Anything But Ordinary: Calculating The Present And Future Value Of Annuities
Variable annuities are another way to save money tax-deferred - but don't jump in blindly! Getting the Whole Story on Variable Annuities
These may look like good retirement vehicles, but beware of fees buried in the fine print. Passing the Buck: The Hidden Costs of Annuities

Series of equal or nearly equal payments, each payment occurring at the end of each equally spaced period. See also Annuity in Advance.

A series of equal payments, each payment occurring at the end of each equally spaced period.Example: For a lender the income stream from a standard, fixed-rate mortgage loan provides an ordinary annuity .

The noun has one meaning:

Meaning #1: an annuity paid in a series of more or less equal payments at the end of equally spaced periods