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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The memory foam construction also provides plush cushioning to prevent pinching. Bestreviews, Mercury News, 26 Mar. 2026 The 8-in-tall (20-cm) mattress features a combination of memory foam and spring support to offer the most supportive comfort. New Atlas, 26 Mar. 2026 At the same time, they are positioned as a step up from standard memory foam mattresses in terms of construction and materials. Jason Phillips, USA Today, 25 Mar. 2026 Some are as simple as a memory foam or contoured pillow, others are quite elaborate contraptions that keep your neck and spine in a precise position. Kristine Thomason, Vogue, 25 Mar. 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 3 Apr. 2026.

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