Definition of stratum
- deep stratum of the skin
- strata of thought
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the lower strata of society have been hit especially hard by this economic downturn
the level of writing in that pop novel is several strata beneath that of serious fiction
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'stratum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
In geology, a stratum is a layer of rock or soil that is distinct from those above and below it. Rock and soil strata (notice the plural form) can be seen in road cuts, cliffs, quarries, riverbanks, and sand dunes, and in pieces of limestone, slate, and shale. Archaeologists digging in historical sites are careful to note the stratum where each artifact is found. Earth scientists divide the earth's atmosphere into strata, just as oceanographers divide the ocean's depths into strata. And for social scientists, a stratum is a group of people who are similar in some way, such as education, culture, or income.
: one of usually many layers of a substance (such as rock)
: a level of society made up of people of the same rank or position
Thesaurus: All synonyms and antonyms for stratum Spanish Central: Translation of stratum Nglish: Men's Bostonian Melshire Top Tan Leather dwpnxvzq0 Britannica English: Translation of stratum for Arabic speakers Britannica.com: Encyclopedia article about stratum
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