plural -s
: a distinctly bedded or broadly lenticular body of rock composed mainly of the remains of sedentary organisms (such as shell beds, crinoid beds, or coral beds) compare bioherm

Word History


bi- entry 2 + Late Latin stroma coverlet, from Greek strōma bed, mattress

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Dictionary Entries Near biostrome

Cite this Entry

“Biostrome.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2023.

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