stratum
- Noun. One of several parallel horizontal layers of material arranged one on top of another.
- Noun. (geology) A layer of sedimentary rock having approximately the same composition throughout.
- Noun. Any of the regions of the atmosphere, such as the stratosphere, that occur as layers.
- Noun. (biology) A layer of tissue.
- Noun. A class of society composed of people with similar social, cultural, or economic status.
- Noun. (ecology) A layer of vegetation, usually of similar height.
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This entry was last updated on RefTopia from its source on 3/20/2012.