Function: meaning, definitions and examples

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function

[ˈfʌŋkʃən ]

Definitions

^{Context #1 | Noun}

computer programming

A function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and allow you to break your program into smaller, more manageable pieces.

Synonyms

method, procedure, subroutine.

Which Synonym Should You Choose?

Word	Description / Examples
function	Used in mathematics, programming, and computer science to describe a block of code that performs a specific task and returns a value. Often found in formal or technical contexts. The function calculates the area of a rectangle. You need to call the function within your main program.
method	In object-oriented programming, a method is a function that is associated with an object and can operate on the data contained in the object. Also, 'method' can refer to systematic processes in broader contexts. The class includes a method to update the user's profile. Her method of studying proved to be very effective.
procedure	Commonly used in procedural programming to describe a block of code that performs a task but does not return a value. Also, 'procedure' can refer to a formal way of doing something in different fields like law or medicine. The procedure initializes the database connection. The surgical procedure took three hours.
subroutine	An old-fashioned term mostly used in early programming languages like FORTRAN or COBOL. It refers to a sequence of program instructions that perform a task, packaged as a unit. It is generally less common in modern programming. The subroutine adds two numbers in the old COBOL program. We used a subroutine to handle the input data.

Examples of usage

Example 1: In JavaScript, you can define a function using the 'function' keyword.
Example 2: The main advantage of using functions is that you can reuse the same code multiple times without rewriting it.

^{Context #2 | Noun}

mathematics

In mathematics, a function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.

Synonyms

mapping, operation, transformation.

Which Synonym Should You Choose?

Word	Description / Examples
function	Used in mathematics and programming to describe a relation between a set of inputs and a set of outputs, where each input is related to exactly one output. The teacher explained how to graph a quadratic function. In Python, a function can take multiple arguments and return a value.
mapping	Commonly used in mathematics and sciences to describe the process of linking or associating one set of items with another. The geographic mapping of the area showed all the elevations and roads. In mathematics, a mapping is a way of assigning elements from one set to another.
operation	Used in mathematics and computing to describe a process or action, often involving mathematical calculations or logical processes. Addition is a basic arithmetic operation. Computer systems perform various operations to process data.
transformation	Often used in mathematics, data science, and other scientific fields to describe a thorough or significant change in form, structure, or appearance. The transformation of the caterpillar into a butterfly was fascinating to watch. In geometry, a transformation may include rotation, translation, or scaling.

Examples of usage

Example 1: The function f(x) = x^2 is a simple mathematical function that squares its input.
Example 2: Functions are used in calculus to describe how one quantity changes in relation to another.

^{Context #3 | Verb}

general

To function means to work or operate in a particular way. It can also refer to the normal or proper working of something.

Synonyms

operate, perform, run.

Which Synonym Should You Choose?

Word	Description / Examples
function	Can also refer to an official event or ceremony. We attended a formal function at the mayor's office The wedding function was well-organized
operate	Use when talking about the physical control or management of a machine or system, or more broadly, how an organization or entity works. The surgeon is set to operate on the patient This machine is easy to operate Our team operates effectively under pressure
perform	Use when discussing the execution of an action, task, or duty, often in a context where skill or precision is required. The actor performed brilliantly on stage We need to perform a series of tests The machine performed beyond our expectations
run	Use when discussing the management or control of a system, program, or event, or when something is in operation over a period of time. She runs a successful business The engine is designed to run for hours without overheating They have been running tests for several weeks

Examples of usage

Example 1: The machine stopped functioning properly after years of use.
Example 2: It is important for all parts of a team to function well together for success.

Interesting Facts

Etymology

The word comes from the Latin 'functio', meaning performance or execution.
It was first used in English around the 14th century to describe the act of performing duties.
The mathematical use of 'function' began in the 17th century, emphasizing a relationship between inputs and outputs.

Mathematics

In math, a function takes an input, processes it, and gives an output, like a vending machine for numbers.
Functions can be represented with formulas or graphs, showing how one quantity depends on another.
There are different types of functions, such as linear, quadratic, and exponential, each with unique characteristics.

Technology

In computer programming, a function is a named section of code designed to perform a specific task.
Developers use functions to organize and reuse code, which makes programs easier to read and maintain.
Functions can return values or perform actions, often simplifying complex processes into manageable parts.

Social Science

In sociology, social functions refer to the roles that different structures or institutions play in society.
Examples include education functioning to transmit culture, or family structures facilitating survival and socialization.
Understanding social functions helps us analyze how societies operate and evolve over time.

Cultural References

In the performing arts, a function can describe an event or gathering, such as a gala or formal gathering.
The concept of function appears in literature, often symbolizing purpose or roles characters play within a story.
Various TV shows and movies often depict characters struggling to find their function in life, highlighting the theme of identity.

Translations

Translations of the word "function" in other languages:

🇵🇹 função

🇮🇳 कार्य

🇩🇪 Funktion

🇮🇩 fungsi

🇺🇦 функція

🇵🇱 funkcja

🇯🇵 機能 (きのう)

🇫🇷 fonction

🇪🇸 función

🇹🇷 işlev

🇰🇷 기능

🇸🇦 وظيفة

🇨🇿 funkce

🇸🇰 funkcia

🇨🇳 功能 (gōngnéng)

🇸🇮 funkcija

🇮🇸 virkni

🇰🇿 функция

🇬🇪 ფუნქცია

🇦🇿 funksiya

🇲🇽 función

Word Frequency Rank

With position #473, this word is vital for basic English fluency. It appears very frequently in everyday language and should be among the first words you learn and actively use.

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470 soon
471 states
472 species
473 function
474 studies
475 began
476 activities
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