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 feels plush yet supportive, and the pillow compresses down to fit easily in a carry-on when not in use. Samantha Leal, Travel + Leisure, 18 Apr. 2026 The soft cork footbed and thick, cushioning memory foam keeps feet comfortable while wearing these leather sandals for hours at a time. Stephanie Osmanski, Better Homes & Gardens, 16 Apr. 2026 The 6-inch gel memory foam provides a soft, plush feel and conforms to your body’s natural curves, reducing pressure points on the shoulders and hips. Bestreviews, Chicago Tribune, 16 Apr. 2026 The dog bed is designed with pressure-relieving orthopedic memory foam to help ensure your pet enjoys optimal comfort. Kasey Caminiti, USA Today, 16 Apr. 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 19 Apr. 2026.

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