Definition of hypolimnion in English:


Line breaks: hypo|lim¦nion
Pronunciation: /ˌhʌɪpə(ʊ)ˈlɪmnɪən

noun (plural hypolimnia /-nɪə/)

  • The lower layer of water in a stratified lake, typically cooler than the water above and relatively stagnant.
    More example sentences
    • MeHg accumulated in the hypolimnion of Lake 240 when oxygen was present.
    • The mean acoustic size of rising bubbles decreased in the hypolimnion but increased in the epilimnion.
    • Both ponds are dystrophic, surrounded by extensive mats of Sphagnum, and stratified in summer with anoxic hypolimnia.


early 20th century: from hypo- 'below' + Greek limnion (diminutive of limnē 'lake').

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elaborate ornamentation of a vocal melody