Emily Dickinson Lexicon
Definition for STRA'TUM
STRA'TUM, n. [plur. Stratums or Strata. The latter is most common. L. from sterno, to spread or lay; Sax. streone.]
- In geology and mineralogy, a layer; any species of earth, sand, coal and the like, arranged in a flat form, distinct from the adjacent matter. The thicker strata are called beds; and these beds are sometimes stratified.
- A bed or layer artificially made.
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