stratum
英 ['strɑːtəm; 'streɪtəm]
美['stretəm]
- n. （组织的）层；[地质] 地层；社会阶层
英英释意
- 1. one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism)
- 2. an abstract place usually conceived as having depth;
- "a good actor communicates on several levels"
- "a simile has at least two layers of meaning"
- "the mind functions on many strata simultaneously"