epilimnionn.

/ɛpɪˈlɪmnɪən/

Forms: Plural epilimnia.

Etymology: < epi- prefix + ancient Greek λιμνίον, diminutive of λίμνη lake.

The upper, uniformly warm layer of water in a stratified lake: cf. hypolimnion n.

ΘΚΠ

the world > the earth > water > lake > [noun] > stratification according to temperature

stratification1860

epilimnion1910

hypolimnion1910

microstratification1931

metalimnion1935

mixolimnion1937

monimolimnion1937

1910 E. A. Birge in Trans. Wisconsin Acad. Sci., Arts & Lett. 16 ii. 1005 I employ two new words in this paper... These terms are epilimnion, for the upper warm layer of water..and hypolimnion, for the lower colder water.

1936 Nature 5 Dec. 971/1 The result of this warming is that, in summer, a warm upper layer of less dense water, the epilimnion, comes to lie over a cold deeper water mass, the hypolimnion.

1959 J. Clegg Freshwater Life Brit. Isles (ed. 2) ii. 38 The epilimnion..is well lighted, warm and well oxygenated, and..a wealth of minute plants is able to thrive.

1959 Times 20 June 9/3 They [sc. tench] have been termed ‘epilimnion feeders’.

Derivatives

epilimˈnetic adj. [compare Greek λιμνήτης living in marshes]

ΚΠ

1957 G. E. Hutchinson Treat. Limnol. I. vii. 447 In the former case, the 15-m. depth was evidently ordinarily epilimnetic, in the latter case metalimnetic.

epiˈlimnial adj. situated in or relating to the epilimnion.

ΚΠ

1940 Nature 24 Aug. 255/1 The epilimnial current..opposes the hypolimnial current, causing turbulence at the thermocline.

This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).

单词	epilimnion
释义	epilimnionn. /ɛpɪˈlɪmnɪən/ Forms: Plural epilimnia. Etymology: < epi- prefix + ancient Greek λιμνίον, diminutive of λίμνη lake. The upper, uniformly warm layer of water in a stratified lake: cf. hypolimnion n. ΘΚΠ the world > the earth > water > lake > [noun] > stratification according to temperature stratification1860 epilimnion1910 hypolimnion1910 microstratification1931 metalimnion1935 mixolimnion1937 monimolimnion1937 1910 E. A. Birge in Trans. Wisconsin Acad. Sci., Arts & Lett. 16 ii. 1005 I employ two new words in this paper... These terms are epilimnion, for the upper warm layer of water..and hypolimnion, for the lower colder water. 1936 Nature 5 Dec. 971/1 The result of this warming is that, in summer, a warm upper layer of less dense water, the epilimnion, comes to lie over a cold deeper water mass, the hypolimnion. 1959 J. Clegg Freshwater Life Brit. Isles (ed. 2) ii. 38 The epilimnion..is well lighted, warm and well oxygenated, and..a wealth of minute plants is able to thrive. 1959 Times 20 June 9/3 They [sc. tench] have been termed ‘epilimnion feeders’. Derivatives epilimˈnetic adj. [compare Greek λιμνήτης living in marshes] ΚΠ 1957 G. E. Hutchinson Treat. Limnol. I. vii. 447 In the former case, the 15-m. depth was evidently ordinarily epilimnetic, in the latter case metalimnetic. epiˈlimnial adj. situated in or relating to the epilimnion. ΚΠ 1940 Nature 24 Aug. 255/1 The epilimnial current..opposes the hypolimnial current, causing turbulence at the thermocline. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018). < n.1910
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