In geology, a stratum is a layer of rock or soil that is distinct from those above and below it. Rock and soil strata (notice the plural form) can be seen in road cuts, cliffs, quarries, riverbanks, and …

In geology and related fields, a stratum (pl.: strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is …

STRATUM definition: a layer of material, naturally or artificially formed, often one of a number of parallel layers one upon another. See examples of stratum used in a sentence.

STRATUM meaning: 1. one of the parts or layers into which something is separated: 2. a layer of rock, soil, or…. Learn more.

Definition of stratum noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A stratum of society is a group of people in it who are similar in their education, income, or social status.

stratum, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

1. A layer of rock whose composition is more or less the same throughout. A particular rock stratum is visibly different from the rock strata above and below it. 2. A layer of tissue, as of …

Stratum comes from the Latin meaning "something that has been laid down," like asphalt or a bedsheet, but we generally use it to describe layers of something. If you go into geology, you …

Jan 8, 2026 · Noun stratum (plural stratums or strata) One of several parallel horizontal layers of material arranged one on top of another. Synonym: tier