Addition Definition & Meaning

American

British

Scientific

More Idioms

Usage

Related Words

Other Word Forms

Etymology

Examples

Related Words

Synonyms addition American [uh-dish-uhn] / əˈdɪʃ ən /

noun

1. the act or process of adding or uniting.

2. the process of uniting two or more numbers into one sum, represented by the symbol +.

3. the result of adding.

   Synonyms: accession, increment, enlargement, increase

4. something added.

   Synonyms: appendix, supplement, accession, increment, enlargement, increase

5. a wing, room, etc., added to a building, or abutting land added to real estate already owned.

6. Chemistry. a reaction in which two or more substances combine to form another compound.

idioms

1. in addition to, as well as; besides.

   In addition to directing the play, she designed most of the scenery.

addition British / əˈdɪʃən /

noun

1. the act, process, or result of adding

2. a person or thing that is added or acquired

3. a mathematical operation in which the sum of two numbers or quantities is calculated. Usually indicated by the symbol +

4. a part added to a building or piece of land; annexe

5. obsolete a title following a person's name

6. (adverb) also; as well; besides

7. (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 /

1. The act, process, or operation of adding two or more numbers to compute their sum.

addition More Idioms

1. 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”; add ) + -iō -ion

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, maintaining structural durability has proven difficult.

From Science Daily

Though some details have yet to be revealed, many of the union’s asks involve expanding protections over the use and abuse of AI, in addition to improved health coverage and higher residuals.

From Los Angeles Times

“We grew revenues with addition of Juniper, but we have strong momentum across both segments.”

From Barron's

In addition to Shenzhen, it also has operations in Germany, Austria and Costa Rica, according to securities filings.

From The Wall Street Journal

In addition, the company will allow touring artists to hire other promoters when performing in its venues.

From BBC

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.