hypolimnion

[ hahy-puh-lim-nee-on, -nee-uh n, hip-uh- ]
/ ˌhaɪ pəˈlɪm niˌɒn, -ni ən, ˌhɪp ə- /

noun, plural hy·po·lim·ni·a [hahy-puh-lim-nee-uh, hip-uh-] /ˌhaɪ pəˈlɪm ni ə, ˌhɪp ə-/.

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

Origin of hypolimnion

1905–10; hypo- + Greek límn(ē) lake + -ion diminutive noun suffix

Related forms

hy·po·lim·net·ic [hahy-poh-lim-net-ik, hip-oh-] /ˌhaɪ poʊ lɪmˈnɛt ɪk, ˌhɪp oʊ-/, hy·po·lim·ni·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hypolimnion

hypolimnion

/ (ˌhaɪpəʊˈlɪmnɪən) /

noun

the lower and colder layer of water in a lake

Word Origin for hypolimnion

C20: from hypo- + 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