[ep-uh-lim-nee-on, -uh n]

noun, plural ep·i·lim·ni·a [ep-uh-lim-nee-uh] /ˌɛp əˈlɪm ni ə/.

(in certain lakes) the layer of water above the thermocline.

Origin of epilimnion

1905–10; epi- + Greek límnion small pond, diminutive of límnē pool, lake
Related formsep·i·lim·net·ic [ep-uh-lim-net-ik] /ˌɛp ə lɪmˈnɛt ɪk/, ep·i·lim·ni·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for epilimnion



the upper layer of water in a lake

Word Origin for epilimnion

C20: from epi- + Greek limnion, diminutive of limnē lake
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012