- Operate or work - The act of executing or performing any duty, office, or
calling; per formance. - The appropriate action of any special organ or part of an
animal or vegetable organism; as, the function of the heart or the
limbs; the function of leaves, sap, roots, etc.; life is the sum of the
functions of the various organs and parts of the body. - The natural or assigned action of any power or faculty,
as of the soul, or of the intellect; the exertion of an energy of some
determinate kind. - The course of action which peculiarly pertains to any
public officer in church or state; the activity appropriate to any
business or profession. - A quantity so connected with another quantity, that if
any alteration be made in the latter there will be a consequent
alteration in the former. Each quantity is said to be a function of the
other. Thus, the circumference of a circle is a function of the
diameter. If x be a symbol to which different numerical values can be
assigned, such expressions as x2, 3x, Log. x, and Sin. x, are all
functions of x. - Alt. of Functionate