Stratum

пласт

plast

(one of several parallel horizontal layers of material arranged one on top of another)

пласт

plast

(layer of sedimentary rock having approximately the same composition throughout)

прослокйа

proslokja

(class of society composed of people with similar social, cultural, or economic status)

слой

sloj

(one of several parallel horizontal layers of material arranged one on top of another)