Category:Stratum

Stra"tum, n.; pl. E. Stratums, l. Strata. The latter is more common. Etym: [l., from sternere, stratum, to spread; akin to gr. Strew, and Cf. Consternation, estrade, prostrate, stratus, street.]

1. (geol.)

Defn: 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.