1
: something produced by building up
fluid buildup in the lungs
2
: the act or process of building up
built up; building up; builds up
1
: to develop gradually by increments
building up endurance
built up a library
2
: to promote the health, strength, esteem, or reputation of
: to accumulate or develop appreciably
Examples of buildup in a Sentence
Noun
There is a big traffic buildup on the highway.
You should clean the mechanism regularly to prevent buildup of dirt.
Both players were given big buildups before the game.
Verb
static electricity built up on the cat's fur
the roller coaster built up momentum
Recent Examples on the Web
Dina Kraft, Christian Science Monitor, 20 May 2025
As with other indoor ranges, shooting trailers require regular cleaning to prevent a dangerous buildup of lead and gunpowder.
—Alene Tchekmedyian, Los Angeles Times, 19 May 2025
Ariel Cohen, Forbes.com, 26 May 2025
This happens when water in front of the tire builds up faster than the vehicle's weight can push water out of the way.
—Nc Weather Bot, Charlotte Observer, 26 May 2025
See All Example Sentences for buildup
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Noun
Mahmoud Issa/Reuters Against the backdrop of intensified bombing, which has killed hundreds of Palestinians in recent days, Israel began a methodical buildup of its forces in Gaza, but has yet to unleash them fully, adding to the sense of uncertainty.
—Dina Kraft, Christian Science Monitor, 20 May 2025
As with other indoor ranges, shooting trailers require regular cleaning to prevent a dangerous buildup of lead and gunpowder.
—Alene Tchekmedyian, Los Angeles Times, 19 May 2025
Verb
To secure America’s supply chain, in addition to building up domestic sources, the U.S. should establish itself as a partner in these regions to meet the need for more uranium, as well as several other critical minerals vitally necessary for the emerging high-tech developments.
—Ariel Cohen, Forbes.com, 26 May 2025
This happens when water in front of the tire builds up faster than the vehicle's weight can push water out of the way.
—Nc Weather Bot, Charlotte Observer, 26 May 2025
See All Example Sentences for buildup
Cite this Entry
“Buildup.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buildup. Accessed 29 May. 2025.
Copy CitationKids Definition
buildup
noun
build·up
ˈbil-ˌdəp 
1
: something produced by building up
2
: the act or process of building up
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