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1. Oxford American Dictionary

   stratum

   • IPA[ˈstrādəm]

   美式

   • n.
     a layer or a series of layers of rock in the ground；a thin layer within any structure

   • noun: stratum, plural noun: strata

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. a layer or a series of layers of rock in the ground a stratum of flint 同義詞 layer, vein, seam, lode, bed, ... 更多stratification, thickness, sheet, lamina
   • ▪ a thin layer within any structure thin strata of air
   • 2. a level or class to which people are assigned according to their social status, education, or income members of other social strata 同義詞 level, class, echelon, rank, grade, ... 更多station, gradation, group, set, bracket, caste, archaicestate, sphere
   • ▪ a group into which members of a population are divided in stratified sampling allocation of sample units to strata

   strata

   • plural form of stratum

   Oxford Dictionary

   strata

   • plural form of stratum

   Oxford American Dictionary

   stratum corneum

   • n.
     the horny outer layer of the skin.

   Oxford American Dictionary

   stratum corneum

   • n.
     the outermost layer of the skin, consisting of keratinized cells.

   Oxford Dictionary

   strata title

   • n.
     the registered ownership of layers of air space (rather than ground area) in a multistorey building: the real estate company bought the strata titles of the two larger offices strata title units

   Oxford Dictionary

3. • 更多解釋

   stratum

   • IPA[ˈstrɑːtəm]

   英式

   • n.
     a layer or a series of layers of rock in the ground: a stratum of flint

   Oxford Dictionary