2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Stratum \Stra"tum\, n.; pl E. {Stratums}, L. {Strata}. The
latter is more common. [L., from sternere, stratum, to
spread; akin to Gr ? to spread, strew. See {Strew}, and cf
{Consternation}, {Estrade}, {Prostrate}, {Stratus},
{Street}.]
1. (Geol.) A bed of earth or rock of one kind formed by
natural causes, and consisting usually of a series of
layers, which form a rock as it lies between beds of other
kinds. Also used figuratively.
2. A bed or layer artificially made a course.
From WordNet r 1.6 [wn]:
stratum
n : one of several parallel layers of material arranged one on
top of another (such as a layer of tissue or cells in an
organism)
more about stratum
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Lake Atitlan, Guatemala
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