加算の定義と意味 - メリアム・ウェブスター

ADDITION Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition Definition Synonyms Example Sentences Word History Phrases Containing Rhymes Entries Near Related Articles Cite this Entry Citation Kids Definition Kids More from M-W Show more Show more Citation Kids More from M-W Save Word To save this word, you'll need to log in. Log In addition noun ad·​di·​tion ə-ˈdi-shən a- Synonyms of addition Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. 1 : a part added (as to a building or residential section) The addition expanded the kitchen. 2 : anything or anyone added : increase The clerk was a recent addition to the staff. 3 : the act or process of adding a recipe enhanced by the addition of freshly ground pepper especially : the operation of combining numbers so as to obtain an equivalent simple quantity schoolchildren learning about addition and subtraction 4 : direct chemical combination of substances into a single product see also: in addition in addition to Synonyms of addition Relevance extension annex See All Synonyms & Antonyms in Thesaurus Examples of addition in a Sentence The children learned addition and subtraction. The museum's collection includes several new additions . 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 . The Rockets traded for Durant in the offseason, but didn’t really get to see what that addition did for the team in a postseason setting. — Dan Santaromita, New York Times , 2 May 2026 In addition to its stake in the maker of automatic timepiece movements Kenissi and its own watchmaking manufacture, the French house is investing in independents. — Lily Templeton, Footwear News , 1 May 2026 In addition the show's regular season, Rutter has competed in multiple follow-up specials, including the Tournament of Champions, the Battle of the Decades, the Ultimate Tournament of Champions and 2020's Greatest of All Time Tournament. — Christopher Rudolph, PEOPLE , 1 May 2026 In addition to stalking and domestic violence crimes, the companies must also act in cases that involve violations of protective orders in stalking cases. — Tim Stelloh, NBC news , 1 May 2026 See All Example Sentences for addition Word History Etymology Middle English addicioun, borrowed from Anglo-French addicion, borrowed from Latin additiōn-, additiō, from addi-, variant stem of addere "to add " + -tiōn-, -tiō, suffix of action nouns First Known Use 14th century, in the meaning defined at sense 1 Time Traveler The first known use of addition was in the 14th century See more words from the same century Phrases Containing addition in addition in addition to Rhymes for addition admission ambition attrition audition clinician cognition coition commission condition contrition dentition dismission See All Rhymes for addition Browse Nearby Words additament addition addition agent See all Nearby Words Articles Related to addition A List of Most Commonly Confused Words Your one-stop clarification shop Cite this Entry Style MLA Chicago APA Merriam-Webster “Addition.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/addition. Accessed 5 May. 2026. Copy Citation Kids Definition addition noun ad·​di·​tion ə-ˈdish-ən a- 1 : the result of adding : increase 2 : the act, process, or operation of adding 3 : a part added (as to a building) More from Merriam-Webster on addition Nglish: Translation of addition for Spanish Speakers Britannica.com: Encyclopedia article about addition Last Updated: 2 May 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 augur 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 Why do we 'bury the lede?' 10 Words for Food with Unfortunate-Sounding Names 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