Meaning & use
stratum
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A layer of material, such as rock or tissue, or a level within a hierarchically organized society.
See it in a sentence
Geologists identified a distinct stratum of volcanic ash in the cliff face.
The policy mainly benefited a narrow stratum of wealthy citizens.
A note on using this word
The plural form is 'strata,' and the word is used both literally in geology and figuratively to describe social or economic classes.
Words with a similar meaning
layertier
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