memory foam

noun

: a dense polyurethane foam that becomes more pliable when in contact with heat

Examples of memory foam in a Sentence

Recent Examples on the Web
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Beyond the cuddly interior, the boots also feature supportive 6-milimiter memory foam insoles that gently hug the arches and soles of your feet. Alicia Geigel, Southern Living, 2 Feb. 2026 Amazon Essentials Glove Ballet Flats These Amazon Essentials glove-style ballet flats are comfortable (thanks to a memory foam insole), supremely in-budget, and add instant polish to even the simplest T-shirt-and-jeans outfit. Annie Blackman, InStyle, 31 Jan. 2026 Plus, their memory foam insoles give your feet firm yet flexible support. Sian Babish, PEOPLE, 30 Jan. 2026 This Point2Point memory foam pillow is a shining example. Amelia McBride, Travel + Leisure, 30 Jan. 2026 See All Example Sentences for memory foam

Word History

First Known Use

1977, in the meaning defined above

Time Traveler
The first known use of memory foam was in 1977

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Cite this Entry

“Memory foam.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/memory%20foam. Accessed 4 Feb. 2026.

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