Definition of hypolimnion
: the part of a lake below the thermocline made up of water that is stagnant and of essentially uniform temperature except during the period of overturn
Learn More about hypolimnion
Britannica.com: Encyclopedia article about hypolimnion
Seen and Heard
What made you want to look up hypolimnion? Please tell us where you read or heard it (including the quote, if possible).