To make (a quantity) smaller.
Of a quantity, to become smaller.
A reduction in the number of stitches, usually accomplished by suspending the stitch to be decreased from another existing stitch or by knitting it together with another stitch. See Decrease (knitting).
An amount by which a quantity is decreased.
To decrease a value by a basic quantity unit.
A small quantity removed or lost. One of a series of regular subtractions.