addition

noun

ad·di·tion ə-ˈdi-shən

Synonyms of addition next

: a part added (as to a building or residential section)

The addition expanded the kitchen.

: anything or anyone added : increase

The clerk was a recent addition to the staff.

: 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

: direct chemical combination of substances into a single product

Phrases

in addition

: besides entry 2, also

The job requires a college degree and, in addition, at least two years of experience.

in addition to

: combined or associated with : besides entry 1 sense 2

In addition to soup, several salads were served.

Example Sentences

The children learned addition and subtraction. The museum's collection includes several new additions.

Recent Examples on the Web In addition to worries over Kyiv’s use of the missiles to potentially fire across the Russian border, the Pentagon has a limited amount and is concerned about U.S. readiness. —

Alex Horton, Washington Post, 1 July 2023 In addition to the ice rink, locker rooms and staff offices, the sports complex houses other campus fitness and wellness facilities, including a gymnasium, pool, fitness center and aerobics areas. —

Chris Bieri, Anchorage Daily News, 1 July 2023 In addition to changing leadership, Musk laid off around 80% of Twitter’s employees since taking over the site. —

Charna Flam, Variety, 1 July 2023 In addition to the fireworks, police discovered 13 ounces of methamphetamine, 200 grams of cocaine and an undisclosed amount of marijuana. —

Andrea Vacchiano, Fox News, 1 July 2023 Putting itself out of business Pallet is a public benefit corporation (PBC), a designation that requires a company to consider its public mission—in addition to profits—in its decision-making. —

Kinsey Crowley, Fortune, 30 June 2023 These charges would be in addition to the 37-count indictment that was brought against Trump earlier this month. —

Alex Shephard, The New Republic, 30 June 2023 The additions mark a step toward recognition of some of the horrors survivors have dealt with. —

Lee O. Sanderlin, Baltimore Sun, 30 June 2023 In addition to serving time in jail, Sorensen was placed on informal probation for a year during which she is prohibited from having a social media presence, must complete a four-hour implicit bias training and submit to warrantless search and seizure, the district attorney's office said. —

Minyvonne Burke, NBC News, 30 June 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'addition.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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