— hypolimnetic /huy'poh lim net"ik, hip'oh-/ , hypolimnial , adj.
/huy'peuh lim"nee on', -nee euhn, hip'euh-/ , n. , pl. hypolimnia /-nee euh/ .
(in certain lakes) the layer of water below the thermocline.
[ 1905-10; HYPO- + Gk límn ( e ) lake + -ion dim. n. suffix ]