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 (hī′pə-lĭm′nē-ŏn′, -ən)
The layer of water in a thermally stratified lake that lies below the thermocline, is noncirculating, and remains perpetually cold.

[hypo- + Greek limnē, lake, pool.]

hy′po·lim·net′ic (-lĭm-nĕt′ĭk), hy′po·lim′ni·al adj.


n, pl -nions or -nia (-nɪə)
(Physical Geography) the lower and colder layer of water in a lake
[C20: from hypo- + Greek limnion, diminutive of limnē lake]


(ˌhaɪ poʊˈlɪm niˌɒn, -ni ən)

n., pl. -ni•a (-ni ə)
(in certain lakes) the layer of water below the thermocline.
[1905–10; hypo- + Greek -limnion, derivative of límnē lake]
hy`po•lim•net′ic (-lɪmˈnɛt ɪk) hy`po•lim′ni•al, adj.
References in periodicals archive ?
Such density changes can delay or halt lake turnover, which could lead to persistent anoxia and redox-stratification in the hypolimnia of eutrophic lakes.
The importance of internal phosphorus load to the eutrophication of lakes with anoxic hypolimnia.