balloon
Americannoun
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a bag made of thin rubber or other light material, usually brightly colored, inflated with air or with some lighter-than-air gas and used as a children's plaything or as a decoration.
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a bag made of a light material, as silk or plastic, filled with heated air or a gas lighter than air, designed to rise and float in the atmosphere and often having a car or gondola attached below for carrying passengers or scientific instruments.
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(in drawings, cartoons, etc.) a balloon-shaped outline enclosing words represented as issuing from the mouth of the speaker.
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an ornamental ball at the top of a pillar, pier, or the like.
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a large, globular wineglass.
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Chemistry Now Rare. a round-bottomed flask.
verb (used without object)
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to go up or ride in a balloon.
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to swell or puff out like a balloon.
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to multiply or increase at a rapid rate.
Membership has ballooned beyond all expectations.
verb (used with object)
adjective
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puffed out like a balloon.
balloon sleeves.
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Finance. (of a loan, mortgage, or the like) having a payment at the end of the term that is much bigger than previous ones.
noun
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an inflatable rubber bag of various sizes, shapes, and colours: usually used as a plaything or party decoration
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a large impermeable bag inflated with a lighter-than-air gas, designed to rise and float in the atmosphere. It may have a basket or gondola for carrying passengers, etc See also barrage balloon hot-air balloon
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a circular or elliptical figure containing the words or thoughts of a character in a cartoon
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a kick or stroke that propels a ball high into the air
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( as modifier )
a balloon shot
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chem a round-bottomed flask
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a large rounded brandy glass
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commerce
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a large sum paid as an irregular instalment of a loan repayment
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( as modifier )
a balloon loan
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surgery
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an inflatable plastic tube used for dilating obstructed blood vessels or parts of the alimentary canal
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( as modifier )
balloon angioplasty
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informal to be completely unsuccessful or unpopular
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informal when the trouble or action begins
verb
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(intr) to go up or fly in a balloon
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(intr) to increase or expand significantly and rapidly
losses ballooned to £278 million
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to inflate or be inflated; distend; swell
the wind ballooned the sails
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(tr) to propel (a ball) high into the air
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Participles
Conjugated Forms
Present
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balloonsimple
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balloonssimple
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have balloonedperfect
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has balloonedperfect
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am ballooningprogressive
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are ballooningprogressive
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is ballooningprogressive
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have been ballooningperfect progressive
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has been ballooningperfect progressive
Past
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balloonedsimple
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had balloonedperfect
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was ballooningprogressive
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were ballooningprogressive
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had been ballooningperfect progressive
Future
Etymology
Origin of balloon
1570–80; < Upper Italian ballone, equivalent to ball ( a ) (< Langobardic; see ball 1) + -one augmentative suffix; or < Middle French ballon < Upper Italian
Explanation
A balloon is a colorful bit of rubber that can be blown up or filled with helium. Many children's parties are decorated with balloons. While most balloons are round, they come in many sizes and shapes. Balloon artists twist long, thin balloons together to form animals, hats, and other items, and Mylar balloons are made from a kind of thin, metallic paper. Much larger balloons include hot air balloons and weather balloons. In the 1500s, balloon was a game played with a leather ball, from the Italian pallone, "large ball."
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.
“Girl With Balloon on Found Landscape” sold for $18 million at a Manhattan auction, signaling renewed demand for the once-anonymous street artist.
From The Wall Street Journal • May 21, 2026
Panahi has won a host of prizes at European film festivals and showcased his debut film "The White Balloon" in Cannes in 1995 which won an award for best first feature.
From Barron's • Dec. 1, 2025
Girl with Balloon, valued at £270,000, was taken from the Grove Gallery in central London in September last year.
From BBC • Sep. 15, 2025
That appearance, part of a parody of the online dating show “Pop the Balloon or Find Love,” also featured musical guest GloRilla and frequent Chappelle collaborator Donnell Rawlings as his characters Beautiful and Ashy Larry.
From Los Angeles Times • Jan. 19, 2025
The procession passed the Austrian Village and Captive Balloon Park, where a hydrogen balloon tethered to the ground took visitors aloft.
From "The Devil in the White City" by Erik Larson
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.
