# memory foam

> English word · Noun

## Definitions
1. Foam consisting of polyurethane and other chemicals used in the manufacturing of pillows, mattresses, laptop sleeves, etc, which reacts to body heat and molds to the shape of the body.

## Etymology
So called because it "remembers", or keeps, the shape of something pressed against it.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/memory-foam