booster seat

noun

: a portable seat that is placed on or attached to a chair or an automobile seat in order to raise a child to a higher position
… they should use a booster seat until they are 8 years old or at least 4 feet, 9 inches tall. Only after that can they ride in the front seat, and even then the back is always safer.Denise Milosevich
She's too big for a high chair, but needs to sit on her knees to keep her head fully above the dining room table. And she doesn't want a booster seat. She'll boost herself, thank you very much.Dave Manley

called also booster chair

Examples of booster seat in a Sentence

Recent Examples on the Web
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.
The bonus is only valid until May 24, but customers can use it twice to buy a new car seat, booster seat, car seat base, travel system, stroller or select baby gear. Melina Khan, USA Today, 27 Apr. 2025 For those up to age 10, a booster seat or child restraint seat would be required. Bay Area News Group, Mercury News, 11 Apr. 2025 Our Graco booster seat has survived two kids and barely shows any wear. Chaunie Brusie, Rn, Parents, 26 Feb. 2025 Kids also grow into larger car seats and booster seats over the years, all of which could see price hikes. Nena Farrell, Wired News, 23 Apr. 2025 See All Example Sentences for booster seat

Word History

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of booster seat was in 1954

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Cite this Entry

“Booster seat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/booster%20seat. Accessed 16 May. 2025.

Last Updated: - Updated example sentences
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