Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The action for which a person or thing is particularly fitted or employed.
  • n. Assigned duty or activity.
  • n. A specific occupation or role: in my function as chief editor.
  • n. An official ceremony or a formal social occasion.
  • n. Something closely related to another thing and dependent on it for its existence, value, or significance: Growth is a function of nutrition.
  • n. Mathematics A variable so related to another that for each value assumed by one there is a value determined for the other.
  • n. Mathematics A rule of correspondence between two sets such that there is a unique element in the second set assigned to each element in the first set.
  • n. Biology The physiological activity of an organ or body part.
  • n. Chemistry The characteristic behavior of a chemical compound, resulting from the presence of a specific functional group.
  • n. Computer Science A procedure within an application.
  • intransitive v. To have or perform a function; serve: functioned as ambassador.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. What something does or is used for.
  • n. A professional or official position.
  • n. An official or social occasion.
  • n. A relation where one thing is dependent on another for its existence, value, or significance.
  • n. A relation in which each element of the domain is associated with exactly one element of the codomain.
  • n. A routine that receives zero or more arguments and may return a result.
  • n. The physiological activity of an organ or body part.
  • n. The characteristic behavior of a chemical compound.
  • n. The role of a social practice in the continued existence of the group.
  • v. to have a function
  • v. to carry on a function; to be in action

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of executing or performing any duty, office, or calling; performance.
  • n. The appropriate action of any special organ or part of an animal or vegetable organism
  • n. 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.
  • n. The course of action which peculiarly pertains to any public officer in church or state; the activity appropriate to any business or profession.
  • n. 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.
  • n. A religious ceremony, esp. one particularly impressive and elaborate.
  • n. A public or social ceremony or gathering; a festivity or entertainment, esp. one somewhat formal.
  • intransitive v. To execute or perform a function; to transact one's regular or appointed business.

from The Century Dictionary and Cyclopedia

  • n. Fulfilment or discharge of a set duty or requirement; exercise of a faculty or office.
  • n. Activity in general; action of any kind; behavior.
  • n. Power of acting; faculty; that power of acting in a specific way which appertains to a thing by virtue of its special constitution; that mode of action or operation which is proper to any organ, faculty, office, structure, etc.
  • n. That which one is bound or which is one's business to do; business; office; duty; employment.
  • n. An official ceremony.
  • n. Any important occasion marked by elaborate ceremonial: extended in recent use to cover social entertainments, as operas, balls, and receptions.
  • n. In mathematics, a mathematical quantity whose value depends upon the values of other quantities, called the arguments or independent variables of the function; a mathematical quantity whose changes of value depend on those of other quantities called its variables.
  • n. Hence, anything which is dependent for its value, significance, etc., upon something else.
  • n. See the adjectives.
  • n. see the adjectives.
  • n. See the adjectives.
  • n. One of several functions related to in the same manner in which ordinary elliptic functions are related to , being merely transformed elliptic functions.
  • n. See the adjectives.
  • n. a function such that the interval of the variable considered may be so divided into parts that the function is continuous, differentiable, etc., in each part.
  • n. In a generalized sense, a function which has its value unchanged by the substitution for its variable of a certain algebraic function thereof. A periodic function of the second kind is one for which this function is linear.
  • n. Two physical quantities whose several mathematical relations to two other physical quantities are the same.
  • n. which may, for instance, be either limited or unlimited.
  • To perform a function; work; act; functionate; especially, in physiology, to have a function; do or be something physiologically.
  • n. See graph.
  • n. A function differing from that just defined by log/r.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a relation such that one thing is dependent on another
  • n. what something is used for
  • v. perform duties attached to a particular office or place or function
  • n. (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)
  • n. a vaguely specified social event
  • n. the actions and activities assigned to or required or expected of a person or group
  • n. a formal or official social gathering or ceremony
  • v. perform as expected when applied
  • n. a set sequence of steps, part of larger computer program
  • v. serve a purpose, role, or function

Etymologies

Latin fūnctiō, fūnctiōn-, performance, execution, from fūnctus, past participle of fungī, to perform, execute.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle French function, from Old French fonction, from Latin functionem, accusative of function ("performance, execution"), from functus perfect participle of fungor ("I perform, I execute, I discharge"). (Wiktionary)

Examples

  • Thus, in Church's proposal, the words ˜recursive function of positive integers™ can be replaced by the words ˜function of positive integers computable by Turing machine™.

    The Church-Turing Thesis

  • The last function A, called the _altitude function_, will be explained when high angle fire is considered.

    Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy"

  • My thesis now is this: that, when we think of the law that thought is a function of the brain, we are not required to think of productive function only; _we are entitled also to consider permissive or transmissive function_.

    The Making of Arguments

  • Symbols are used to mark locations of addresses, such as addresses of data or addresses of function pointers .. globl tells the assembler that it shouldnt get rid of the symbol after assembly because the linker needs it. main is the symbol where the program starts.. type main, @function main's type is a function. main:

    doggdot.us

  • For example is there such a thing as a destructor [function () ~function ()] in PHP5 and is it needed?

    WebDeveloper.com

  • Face Recognition AF&AE function that improves portrait photography The Optio A40 is equipped with a Face Recognition AF&AE function* that automatically detects and focuses on faces.

    Digital Camera Reviews

  • as children with ADD get older the pediatric reversal effect fades and instead of finding it easier to function the same drug which worked as a child will have a reverse effect ‘normal’ effect as an adult making it harder for them to function*

    The Volokh Conspiracy » Adderall

  • $expected must be a well-formed block of HTML. capture (\&function, ...) - > ($text, $result) Invokes a function while grabbing stdout, so the "http response" doesn't flood the console that you're running the unit test from, and you can analyse the result in your test function.

    TWiki.Codev

  • There is also a function called config () for accessing our main config. php file. class Loader function controller ($controller, $function = NULL) if (! file_exists (APPPATH. 'controllers / '. $controller.

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  • AskApache_Net:: _build_sock () * / function _build_sock ($url) {$this - > msg (__function__.

    AskApache Web Fire

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