plural strata
ˈstreɪtə 
British ˈstrɑːtə
1
: one of usually many layers of a substance (such as rock)
a rock stratum
a stratum of earth
2
: a level of society made up of people of the same rank or position
Drug abuse is a problem in every stratum of society. = Drug abuse is a problem in all social strata.
Cite this Entry
“Stratum.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/stratum. Accessed 20 Jun. 2026.
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