[epi.lim.ni.on] n [NL, fr. epi- + Gk limnion, dim. of limne marshy lake--more at limnetic] (ca. 1910): the water layer overlying the thermocline of a lake
EPILIMNION
Meaning of EPILIMNION in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012