thermocline

noun 0.696

pycnometry

noun 0.672

pycnometer

noun 0.664

chemocline

noun 0.655

isopycnic

noun 0.652

halocline

noun 0.633

hypolimnion

noun 0.516

midwater

noun 0.512

pycnogenol

noun 0.506

isocline

noun 0.504

aphotic zone

noun 0.501