Superstratumnoun
(geology) A stratum that is on top of another
Substratumnoun
A layer that lies underneath another.
Superstratumnoun
(linguistics) A language imposed upon a population that previously spoke another language
Substratumnoun
(figuratively) The underlying cause or basis of something.
Superstratumnoun
A stratum, or layer, above another.
Substratumnoun
(linguistics) A substrate.
Substratumnoun
That which is laid or spread under; that which underlies something, as a layer of earth lying under another; specifically (Agric.), the subsoil.
Substratumnoun
The permanent subject of qualities or cause of phenomena; substance.
Substratumnoun
any stratum lying underneath another
