“Below this surface soil is a stratum of sand, overlying the gravelly beds below and passing into the surface soil just mentioned.”
“To suggest that a thin stratum of Anglo-Saxon immigrants, ruling a vastly larger population, without a written language or a state level of organisation, could linguistically assimilate their social inferiors simply makes no sense.”
“Keratolytic preparations containing salicylic acid in a propylene glycol gel may be used to remove the stratum corneum.”
(meteorology) The region of the uppermost atmosphere where temperature increases along with the altitude due to the absorption of solar ultraviolet radiation by ozone. The stratosphere extends from the tropopause (10–15 kilometers) to approximately 50 kilometers, where it is succeeded by the mesosphere.