Descending series

(Math.) a series in which each term is numerically smaller than the preceding one; also, a series arranged according to descending powers of a quantity.

See also: Descending

References in periodicals archive ?
The Gen2XR is a more complex reticle, offering a descending series of aiming points to compensate for both elevation and windage.
The first movement (moderato) opens with the solo bass presenting a theme consisting of an ascending and descending series of thirds, sevenths, and sixths, punctuated unobtrusively by Scotch snaps to the quiet accompaniment of a slowly changing pedal point in the cello and double bass.