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 sand dunes, and in pieces of limestone, slate, and shale.

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 separated by visible surfaces known as either bedding surfaces or bedding planes. [1]

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

Geology. a single bed of sedimentary rock, generally consisting of one kind of matter representing continuous deposition. Biology. a layer of tissue; lamella. Ecology. (in a plant community) a …

A stratum is a layer of something, whether abstract, like a social stratum composed of only billionaires, or physical, like the different strata (that’s the plural version) of clouds that an airplane passes through.

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

2023年2月21日 · A stratum is a rock layer with a lithology (texture, color, grain size, composition, fossils, etc.) different from the adjacent ones and several form strata. Each stratum is separated by a visible bedding surface or plane.

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

What does the noun stratum mean? There are ten meanings listed in OED's entry for the noun stratum. See ‘Meaning & use’ for definitions, usage, and quotation evidence. stratum has developed meanings and uses in subjects including. How common is the noun stratum? How is the noun stratum pronounced? Where does the noun stratum come from?

2025年3月19日 · stratum (plural stratums or strata) One of several parallel horizontal layers of material arranged one on top of another. It is built of alternate strata of brick and clay, and the sides correspond to the direction of the meridians and parallels.