Stra·ta n., pl. of Stratum.
Stra·tum n.; pl. E. Stratums L. Strata The latter is more common.
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.
n 1: one of several parallel layers of material arranged one on
top of another (such as a layer of tissue or cells in an
2: an abstract place usually conceived as having depth; "a good
actor communicates on several levels"; "a simile has at
least two layers of meaning"; "the mind functions on many
strata simultaneously" [syn: level, layer]
[also: strata (pl)]