A layer of water between two others in a lake or the sea in which the temperature decreases rapidly with increasing depth; a thermocline separating an epilimnion from a hypolimnion.
Origin
Early 20th century.
Definition of discontinuity layer in US English:
discontinuity layer
noun
Limnology
A layer of water between two others in a lake or the sea in which the temperature decreases rapidly with increasing depth; a thermocline separating an epilimnion from a hypolimnion.