hypolimnion
/ˌhaɪpəʊˈlɪmnɪən/noun
(pl. hypolimnia /-nɪə/)
- the lower layer of water in a stratified lake, typically cooler than the water above and relatively stagnant（成层湖的）下层滞水带, 均温层, 湖下层, 湖底静水层。
词源
early 20th cent.: from HYPO- 'below' + Greek limnion（diminutive of limnē 'lake'）.