stratum
stra tuhm
- n one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)
- n people having the same social, economic, or educational status
- n an abstract place usually conceived as having depth
- Our social stratum is gradually changing, with the middle stratum burgeoning in a way to become the most important part.
- Greenwald's is a highly specialized sample from the profession's top economic stratum.
- Thus, they reasoned, the bones lying in the stratum below must be between 11,000 and 13,000 years old.