# function meaning

**Noun:****function**fúngkshun- (mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)

- mathematical function, single-valued function, map, mapping - What something is used for
*"the function of an auger is to bore holes"*

- purpose, role, use - The actions and activities assigned to or required or expected of a person or group
*"the function of a teacher"*

- office, part, role - A relation such that one thing is dependent on another
*"height is a function of age"; "price is a function of supply and demand"* - A formal or official social gathering or ceremony
*"it was a black-tie function"* - A vaguely specified social event
*"a seemingly endless round of social functions"*

- affair, occasion, social occasion, social function - A set sequence of steps, part of larger computer program

- routine, subroutine, subprogram, procedure

**Verb:****function**fúngkshun- Perform as expected when applied

- work, operate, go, run - Serve a purpose, role, or function
*"The table functions as a desk"*

- serve - Perform duties attached to a particular office or place or function

- officiate

**Derived forms:**functions, functioning, functioned**See also:**functional, functionary, functioning, nonfunctional**Type of:**answer, computer software, do, duty, mathematical relation, package, relation, serve, social affair, social event, social gathering, software, software package, software program, software system, suffice, usefulness, utility**Antonym:**malfunction**Part of:**computer program, computer programme [Brit], program, programme [Brit, Cdn]**Encyclopedia:**Function- (mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)

[Business]*noun*,*verb*■

*noun***CONSUMPTION FUNCTION****1**[C,U]a special activity or purpose of a person or thing:

*to fulfil/perform a useful function**Smartphones combine the functions of cell phones and handheld computers.**Your function is to run your department efficiently.***2**[C]the part of a company that is responsible for a particular area:

*accounting, manufacturing, sales and marketing and other corporate functions**We considered splitting up our key business functions so that they were not all in one place.***3**() [C]**IT**a part of a program, etc. that carries out a basic operation:

*the function keys***4**[C]a social event or official ceremony:

*The staff are allowed two social functions a year.**The hall provides a venue for weddings and other functions.***5**[sing.]**a function of sth**if one thing is

**a function of**another, its value depends on the varying values of the other thing: (

*figurative*)*Salary is a function of age and experience.**He believed that success was a function of competence and hard work.*■

[no obj]*verb*to work in the correct way:

*The fire alarm system is now functioning again.**a fully functioning market economy**Small companies can't function without good teamwork.***SYN****OPERATE****PHRASAL VERBS****function as sb/sth**to perform the action or the job of the thing or person mentioned:

*The sofa also functions as a bed.**The managers had already been functioning as owners of the company.*

[Economics]

A relation between two or more variables. If*y*is a function of*x*, written*y*=*f*(*x*), when the value of the argument*x*is known, the function tells us how to find the value of*y*. If*y*is a single-valued function of*x*, for each value of*x*there is only one value of*y*. In the linear function*y*=*ax*+*b*, for example, or the quadratic function*y*=*ax*^{2}+*bx*+*c*,*y*is a single-valued function of*x*. For some functions, however, there may be more than one value of*y*for any given*x*, or there may be no real values of*y*. For example, if*y*= √*x*, when*x*< 0 there are two values of*y*, since for any*y*such that*y*^{2}=*x*, it is always also true that (-*y*)^{2}=*x*. When*x*> 0, however, there are no real values of*y*, but two ‘imaginary’ numbers,*iz*and -*iz*, where*z*^{2}= -*x*. It is also common to have a function of several variables, for example*y*=*f*(*x*_{1},*x*_{2}, …,*x*). In this case every_{N}*x*from_{i}*x*_{1}to*x*needs to be specified to determine_{N}*y*.**See also:**decreasing function, homogeneous function, implicit function, increasing function, inverse function, linear function, log-linear function, monotonic function, non-linear function, oscillatory function, piecewise linear function, step function, and trigonometric function

[Electronics]

1. A mapping between two sets of quantities or points**A****and****B,****such that: (1) For each****y****in****B,****there exists at least one corresponding****x****in****A;****and (2) For each****x****in****A,****there exists exactly one****y****in****B.****In this case****y****is said to be a function of****x;****this can be written as****y****=****f****(****x).****The set****A****is called the****domain****of****f;****the set****B****is called the****range****of****f.****2. A mathematical expression, using symbols, relating variables (e.g., the expression****x - y****=****z****is a function of variables****x, y,****and****z).****3. The behavior and application for which a device or system is designed.**

4. Part of a computer instruction specifying the operation to be done.

[Medicine]

n

vi

[Medicine]

n

**:**any of a group of related actions contributing to a larger action;*esp***:**the normal and specific contribution of a bodily part to the economy of a living organism —**func·tion·less**adjvi

**func·tioned**;

**func·tion·ing**

**:**to have a function ‹shivering function*s*to maintain the heat of the body›**function as: function as sth to ...****function / functionary | function | functionary |: [Law]FUNCTION - Th ...****aperiodic function: [Electronics]A non ...**

### Examples

- More: Next
- insects' horns have various
*functions*. - the
*function*is rather badly behaved. - travel was a
*function*of national wealth. - congress has assumed some negative
*functions*. - some english adverbs
*function*as adjectives.