Definition of stratum

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Stratum (n.) 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..

Lern More About Stratum

Substrate :: Substrate (n.) A substratum.
Rubble :: Rubble (n.) A mass or stratum of fragments or rock lying under the alluvium, and derived from the neighboring rock..
Soil :: Soil (n.) The upper stratum of the earth; the mold, or that compound substance which furnishes nutriment to plants, or which is particularly adapted to support and nourish them..
Outlier :: Outlier (n.) A part of a rock or stratum lying without, or beyond, the main body, from which it has been separated by denudation..
Subsoil :: Subsoil (n.) The bed, or stratum, of earth which lies immediately beneath the surface soil..
Seam :: Seam (n.) A thin layer or stratum; a narrow vein between two thicker strata; as, a seam of coal..
Lithologically :: Lithologically (adv.) From a lithological point of view; as, to consider a stratum lithologically..
Layer :: Layer (n.) That which is laid; a stratum; a bed; one thickness, course, or fold laid over another; as, a layer of clay or of sand in the earth; a layer of bricks, or of plaster; the layers of an onion..
Bed :: Bed (n.) A layer or seam, or a horizontal stratum between layers; as, a bed of coal, iron, etc..
Outcrop :: Outcrop (n.) The coming out of a stratum to the surface of the ground.
Thallus :: Thallus (n.) A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens..
Undersoil :: Undersoil (n.) The soil beneath the surface; understratum; subsoil.
Jump :: Jump (n.) A dislocation in a stratum; a fault.
Substratum :: Substratum (n.) That which is laid or spread under; that which underlies something, as a layer of earth lying under another; specifically (Agric.), the subsoil..
Fahlband :: Fahlband (n.) A stratum in crystalline rock, containing metallic sulphides..
Base-burner :: Base-burner (n.) A furnace or stove in which the fuel is contained in a hopper or chamber, and is fed to the fire as the lower stratum is consumed..
Rampart :: Rampart (n.) A broad embankment of earth round a place, upon which the parapet is raised. It forms the substratum of every permanent fortification..
Mine :: Mine (v. t.) To dig away, or otherwise remove, the substratum or foundation of; to lay a mine under; to sap; to undermine; hence, to ruin or destroy by slow degrees or secret means..
Turf :: Turf (n.) That upper stratum of earth and vegetable mold which is filled with the roots of grass and other small plants, so as to adhere and form a kind of mat; sward; sod..
Drill :: Drill (v. t.) To cause to flow in drills or rills or by trickling; to drain by trickling; as, waters drilled through a sandy stratum..
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