Stratum

/ˈstreɪtəm/

Meaning & Definition

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

Etymology

Latin, meaning 'layer' or 'bed'.

Common Phrases and Expressions

stratum of society
A specific layer or class within a societal hierarchy.
geological stratum
A distinct layer of rock or soil in geology.
social stratum
A level or class in a society.

Related Words

stratification
The arrangement or classification of strata.
stratify
To arrange or classify into layers.
substratum
An underlying layer or substance.

Slang Meanings

Social class
He's from the upper stratum of society.
Layer of complexity
There are multiple strata to his argument.