One entry found for stratum.

Main Entry: stra·tum
Pronunciation: strt-m, strat-
Function: noun
Inflected Form(s): plural stra·ta /-/
1 : a layer of a substance; especially : one of a series of layers <a rock stratum> <a stratum of earth> <the deep stratum of the skin>
2 : a level of society consisting of persons of the same or similar rank or position