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hypolimnion

Syllabification: (hy·po·lim·ni·on)
Definition of hypolimnion

noun (plural hypolimnionia /-nēə/)

  • the lower layer of water in a stratified lake, typically cooler than the water above and relatively stagnant.

Origin:

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

hypolimnion in other Oxford dictionaries

Definition of hypolimnion in the British & World English dictionary