Meaning & Definition of word "Stratum"

noun:

• 1. A layer or level, often used in the context of geological or social hierarchies.
  • Example: The geologist carefully examined each stratum of rock to understand the formation's history.
• 2. A group or class of people with similar social, economic, or educational characteristics.
  • Example: The study focused on the effects of education within different social strata.
• 3. A sheet, layer, or level of material, as in biological sediment or tissue.
  • Example: The archaeologists uncovered a stratum rich in artifacts from the ancient civilization.
• 4. In medicine, a layer of tissue or cell covering a surface or a bodily organ.
  • Example: The outer stratum of the skin protects the underlying layers from damage.
• 5. In statistical analysis, a subset of a population used for sampling.
  • Example: The researchers divided the participants into strata to ensure diverse representation.