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
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, Israel struck components of Iran’s air defence network destroying dozens of radar stations and launchers.
—
Natasha Lindstaedt, Forbes.com, 14 June 2025
The device will reveal information about the engine and control settings, in addition to cockpit conversations, Paul Fromme, a mechanical engineer with the U.K.-based Institution of Mechanical Engineers said in a statement.
—Arkansas Online, 14 June 2025
During the pandemic, staffing ranged between 17 and 28 employees dedicated to FOID card application processing, in addition to temporary contractors, the state police said.
—Jeremy Gorner, Chicago Tribune, 14 June 2025
In addition, there is a European Space Agency payload, the Package for Resource Observation and in-situ Prospecting for Exploration, commercial exploration and Transportation (PROSPECT), designed to assess the potential use of resources for human exploration.
—Richard Tribou, The Orlando Sentinel, 14 June 2025
See All Example Sentences for addition
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.
Natasha Lindstaedt, Forbes.com, 14 June 2025
The device will reveal information about the engine and control settings, in addition to cockpit conversations, Paul Fromme, a mechanical engineer with the U.K.-based Institution of Mechanical Engineers said in a statement.
—Arkansas Online, 14 June 2025
During the pandemic, staffing ranged between 17 and 28 employees dedicated to FOID card application processing, in addition to temporary contractors, the state police said.
—Jeremy Gorner, Chicago Tribune, 14 June 2025
In addition, there is a European Space Agency payload, the Package for Resource Observation and in-situ Prospecting for Exploration, commercial exploration and Transportation (PROSPECT), designed to assess the potential use of resources for human exploration.
—Richard Tribou, The Orlando Sentinel, 14 June 2025
See All Example Sentences for addition
Cite this Entry
“Addition.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/addition. Accessed 17 Jun. 2025.
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)
Love words? Need even more definitions?
Merriam-Webster unabridged
Share