Last Updated
：2025/11/19
stratum
IPA(Pronunciation)
Sense（2）
（ plural ）
（ plural ）
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One of several parallel horizontal layers of material arranged one on top of another. / (geology) A layer of sedimentary rock having approximately the same composition throughout.
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stratum
A thin stratum of volcanic ash preserved the footprints for millennia.
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A thin stratum of volcanic ash preserved the footprints for millennia.
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