addition
noun
ad·di·tion
ə-ˈdi-shən 
a-
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:
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
In addition to negligence, his lawsuit also accuses the producers of intentional infliction of emotional distress.
—
Meg James, Los Angeles Times, 18 Apr. 2026
In addition to his older sister, Jaden has two younger brothers.
—Kerry Burke, New York Daily News, 18 Apr. 2026
In addition to its own productions, There & Then intends to collaborate with artists and communities across different career stages on an international basis.
—Naman Ramachandran, Variety, 17 Apr. 2026
In addition to the medical school, Franciscan is also developing plans to expand the number of post-graduate residency slots in Indiana by more than 250, according a Friday news release.
—Deborah Laverty, Chicago Tribune, 17 Apr. 2026
See All Example Sentences for addition
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Meg James, Los Angeles Times, 18 Apr. 2026
In addition to his older sister, Jaden has two younger brothers.
—Kerry Burke, New York Daily News, 18 Apr. 2026
In addition to its own productions, There & Then intends to collaborate with artists and communities across different career stages on an international basis.
—Naman Ramachandran, Variety, 17 Apr. 2026
In addition to the medical school, Franciscan is also developing plans to expand the number of post-graduate residency slots in Indiana by more than 250, according a Friday news release.
—Deborah Laverty, Chicago Tribune, 17 Apr. 2026
See All Example Sentences for addition
Cite this Entry
“Addition.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/addition. Accessed 18 Apr. 2026.
Copy CitationKids 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)
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