Definitions for "Metalimnion"
the stratum of steep thermal gradient that separates the epilimnion from the hypolimnion in a thermally stratified lake.
The middle or transitional zone between the well-mixed epilimnion and the colder hypolimnion layers in a lake. This layer contains an area in the water column where the temperature drops sharply.
The metalimnion is a mixing zone within a lentic ecosystem