機能の定義と意味 - メリアム・ウェブスター

FUNCTION Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition noun verb noun 2 noun verb Synonyms Synonym Chooser Example Sentences Word History Phrases Containing Rhymes Entries Near Cite this Entry Citation Kids Definition Kids Medical Definition Medical More from M-W Show more Show more Citation Kids Medical More from M-W Save Word To save this word, you'll need to log in. Log In function 1 of 2 noun func·​tion ˈfəŋ(k)-shən Synonyms of function Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. 1 : professional or official position : occupation His job combines the functions of a manager and a worker. 2 : the action for which a person or thing is specially fitted or used or for which a thing exists : purpose the function that volunteers can perform in the organization 3 : any of a group of related actions contributing to a larger action especially : the specific contribution of a bodily part to the processes necessary for life in an organism The function of the heart is to pump blood through the body. 4 : an official or formal ceremony or social gathering They went to several functions during their college reunion weekend. 5 a : a mathematical correspondence that assigns exactly one element of one set to each element of the same or another set b : a variable (such as a quality, trait, or measurement) that depends on and varies with another height is a function of age also : result illnesses that are a function of stress 6 : characteristic behavior of a chemical compound due to a particular reactive unit also : functional group 7 : a computer subroutine specifically : one that performs a calculation with variables (see variable entry 2 sense 1a ) provided by a program and supplies the program with a single result functionless ˈfəŋ(k)-shən-ləs adjective function 2 of 2 verb functioned ; functioning ˈfəŋ(k)-sh(ə-)niŋ intransitive verb 1 : to have a function : serve a couch that also functions as a bed an attributive noun functions as an adjective 2 : to carry on a function or be in action : operate The new machine functions well. an immune system functioning normally Synonyms of function Relevance Noun event party reception bash celebration Verb serve act work See All Synonyms & Antonyms in Thesaurus Choose the Right Synonym for function function , office , duty , province mean the acts or operations expected of a person or thing. function implies a definite end or purpose or a particular kind of work. the function of language is two-fold: to communicate emotion and to give information — Aldous Huxley office is typically applied to the function or service associated with a trade or profession or a special relationship to others. they exercise the offices of the judge, the priest, the counsellor — W. E. Gladstone duty applies to a task or responsibility imposed by one's occupation, rank, status, or calling. it is the judicial duty of the court, to examine the whole case — R. B. Taney province applies to a function, office, or duty that naturally or logically falls to one. I felt it was not my province to inquire — Anne Brontë Examples of function in a Sentence Noun The function of the heart is to pump blood through the body. He believes that the true function of art is to tell the truth. What functions do these programs fulfill? infants learning to control their bodily functions The instrument is chiefly used to measure and record heart function . The design achieves a perfect blend of form and function . His job combines the functions of a manager and a worker. Her chief function is to provide expert legal advice. They went to several functions during their college reunion weekend. Verb The new machine functions well. His bad health has prevented him from being able to function effectively in recent weeks. Her heart now seems to be functioning normally. The computer network is not yet fully functioning . See More Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback . Noun And having waited for three days in the NFL's green room backstage, Heidenreich emerged in his Full Dress Blue uniform worn by midshipmen at formal functions . — Armando Salguero Outkick, FOXNews.com , 26 Apr. 2026 At a school function , Duncan finally succeeds in getting JoAnne to talk to him, but her efforts to funnel him to a different therapist lead inadvertently to his next big score. — Scott Tobias, Vulture , 26 Apr. 2026 Verb Instead of functioning as standalone tools, robots become part of a coordinated security network. — Jijo Malayil, Interesting Engineering , 27 Apr. 2026 That system functions best when those requiring protection are dispersed. — Vivian Salama, The Atlantic , 27 Apr. 2026 See All Example Sentences for function Word History Etymology Noun and Verb Latin function-, functio performance, from fungi to perform; probably akin to Sanskrit bhuṅkte he enjoys First Known Use Noun 1533, in the meaning defined at sense 2 Verb 1856, in the meaning defined at sense 1 Time Traveler The first known use of function was in 1533 See more words from the same year Phrases Containing function a function of Bessel function circular function composite function cumulative distribution function density function discriminant function distribution function executive function exponential function function key function word hyperbolic function inverse function linear function logarithmic function power function probability density function probability function propositional function rational function sentential function step function trigonometric function See More Rhymes for function junction unction adjunction compunction conjunction disjunction dysfunction injunction inunction malfunction eigenfunction multifunction See All Rhymes for function Browse Nearby Words Funchal function functionaire See all Nearby Words Cite this Entry Style MLA Chicago APA Merriam-Webster “Function.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/function. Accessed 4 May. 2026. Copy Citation Kids Definition function 1 of 2 noun func·​tion ˈfəŋ(k)-shən 1 : professional job or duties : occupation 2 a : the particular purpose for which a person or thing is specially fitted or used or for which a thing exists the function of a knife is cutting b : the natural or proper action of a bodily part in a living thing the function of the heart 3 : a large important ceremony or social affair 4 a : a mathematical relationship that assigns exactly one element of one set to each element of the same or another set b : something (as a quality, trait, or measurement) that is determined by or based on something else height is a function of age in children functionless -ləs adjective function 2 of 2 verb functioned ; functioning -sh(ə-)niŋ : to serve a certain purpose : work Medical Definition function 1 of 2 noun func·​tion ˈfəŋ(k)-shən 1 : any of a group of related actions contributing to a larger action especially : the specific contribution of a bodily part to the processes necessary for life in an organism The function of the kidneys is to filter waste from the blood. see vital function 2 : characteristic behavior of a chemical compound due to a particular reactive unit also : functional group functionless -ləs adjective function 2 of 2 intransitive verb functioned ; functioning -sh(ə-)niŋ : to have a function shivering functions to maintain the heat of the body More from Merriam-Webster on function Nglish: Translation of function for Spanish Speakers Britannica.com: Encyclopedia article about function Last Updated: 28 Apr 2026 - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Word of the Day scrupulous See Definitions and Examples » Get Word of the Day daily email! Popular in Grammar & Usage See More More Commonly Mispronounced Words 5 Verbal Slip Ups and Language Mistakes Is it 'used to' or 'use to'? The Difference Between 'i.e.' and 'e.g.' Why is '-ed' sometimes pronounced at the end of a word? See More Popular in Wordplay See More The Longest Long Words List 9 Other Words for Beautiful The Words of the Week - May 1 Was 'nervous Nellie' a Real Person? 12 Lovely and Unusual Words for the Natural World See More Popular See More More Commonly Mispronounced Words The Longest Long Words List 9 Other Words for Beautiful See More Games & Quizzes See All Quordle Can you solve 4 words at once? Play Blossom Pick the best words! Play The Missing Letter A daily crossword with a twist Play Name That Tree! A quiz that’s all bark, no bite. Take the quiz See All