balloon
noun
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.
have been ballooning
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present perfect progressiveof balloon.present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
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.
All the while their populations have been ballooning in cities around the world.
From Scientific American ● Jun. 20, 2023
The action-adventure genre, which has worldwide appeal but whose budgets have been ballooning until they are ready to burst, will finally be terminated.
From Time Magazine Archive
