Meanings
noununderbed (plural underbeds)
plural underbeds
- An underlying base that supports a bed or foundation.
An underbed is necessary in unbonded cementitious installations and may be required in some bonded ones.
2011, H. Leslie Simmons, Olin's Construction: Principles, Materials, and Methods, page 7711 more example
It has an underbed of slate and a cover of hard shales which contains seams of sandstone and form a bluff.
1886, Geological Survey of Alabama, Special Report (issue 1, page 182)
Origin
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Cite this entry
APA
underbed. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/underbed
MLA
“underbed.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/underbed. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “underbed,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/underbed.
Source: underbed on Wiktionary, CC BY-SA 4.0.