One who does anything, good or bad; a doer; an agent. (Obs.)
2.
(Mach.)
(a)
One of the variables of a quantic as distinguished from a coefficient.
(b)
The multiplier. Note: The terms facient, faciend, and factum, may imply that the multiplication involved is not ordinary multiplication, but is either some specified operation, or, in general, any mathematical operation. See Multiplication.
