加算の定義と意味 | Dictionary.com

ADDITION Definition & Meaning | Dictionary.com Synonyms addition American [ uh - dish - uh n] / əˈdɪʃ ən / noun the act or process of adding or uniting. the process of uniting two or more numbers into one sum, represented by the symbol +. the result of adding. Synonyms: accession , increment , enlargement , increase something added . Synonyms: appendix , supplement , accession , increment , enlargement , increase a wing, room, etc., added to a building, or abutting land added to real estate already owned. Chemistry. a reaction in which two or more substances combine to form another compound. idioms in addition to , as well as; besides. In addition to directing the play, she designed most of the scenery. addition British / əˈdɪʃən / noun the act, process, or result of adding a person or thing that is added or acquired a mathematical operation in which the sum of two numbers or quantities is calculated. Usually indicated by the symbol + a part added to a building or piece of land; annexe obsolete a title following a person's name (adverb) also; as well; besides (preposition) besides; as well as "Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 addition Scientific / ə-dĭsh ′ ən / The act, process, or operation of adding two or more numbers to compute their sum. addition More Idioms see in addition . Usage What is a basic definition of addition ? Addition is a mathematical operation in which two or more numbers are combined to equal a greater number. The word addition also refers to the act of adding. More generally, it refers to an increase or boost applied to something. Addition has a few other senses as a noun. Addition is one of math’s basic operations. Two or more numbers are united to result in a greater number, called a sum . The symbol used for addition is +, which is called a plus sign. Real-life examples: Here are some basic examples of addition : 2 + 2 = 4, 17 + 35 = 52, 143 + 64 = 207. Used in a sentence: I’m teaching the kids to use addition to figure out how much money they need to pay for lunch. An addition is something that has been joined or combined with something else to enhance it or provide more to it. Real-life examples: Recipes can be improved or made more flavorful by using additions such as spices. Accessories and decorations are used as additions to things like cars or clothing to make them look nicer or more stylish. Used in a sentence: Paintings and flowers make nice additions to any room. Relatedly, addition can refer to new rooms or wings that are attached to a building. Used in a sentence: The college is planning a new addition to the campus library. Addition is also used to refer to the act or an instance of adding to something or increasing it in some way. Used in a sentence: The roller coaster became much more popular after the addition of exciting music and amazing decorations. Related Words Addition, accessory, adjunct, attachment mean something joined onto or used with something else. Addition is the general word, carrying no implication of size, importance, or kind, but merely that of being joined to something previously existing: an addition to an income, to a building, to one's cares. An accessory is a subordinate addition to a more important thing, for the purpose of aiding, completing, ornamenting, etc.: accessories to a costume. An adjunct is a subordinate addition that aids or assists a main thing or person but is often separate: a second machine as an adjunct to the first. An attachment is an accessory part that may be easily connected and removed: a sewing machine attachment for pleating. Other Word Forms preaddition noun readdition noun Etymology Origin of addition First recorded in 1350–1400; Middle English addicio(u)n, from Latin additiōn-, stem of additiō, from addit(us) “added” (past participle of addere “to add”; see add ) + -iō -ion Explanation An addition is the act of adding something new, like a baby — a new addition to your family — or what you do in math class: the addition of columns of numbers to get the sum. The noun addition comes from the Old French word adition, meaning "that which is added." A new room built onto your house, a new item in a store's inventory, even another baseball cap in your collection — all of these are additions. Usually thought of as improvements, you may have heard the phrase "welcome addition" to describe a new cast mate to a television show that has lost its creative spark or a new ball field at your local park. Keep Reading on Vocabulary.com Vocabulary lists containing addition Arithmetic Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide! List 1 Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use! The Number System Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time! Example Sentences Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com. In addition, “reassignment will only occur if the nature of the allegations fits one of these descriptions.” From Los Angeles Times • May 5, 2026 This time around, in addition to its earlier playbook, Iran has a legion of attack drones which are serving as a significant force multiplier. From The Wall Street Journal • May 5, 2026 In a well-known law review article, Justice Antonin Scalia—the court’s original originalist—argued that in addition or in connection to originalism, judges should create their own hard-and-fast rules. From Slate • May 5, 2026 In addition to missing peace negotiations with Iran in Islamabad, Pakistan, he did not attend meetings in Doha and Geneva. From Salon • May 5, 2026 In addition to the donut cart, there was a table of brownies, pies, and giant heart-shaped cookies. From "Bye Forever, I Guess" by Jodi Meadows Related Words bonus boost enhancement expansion extension supplement Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023 Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.