pycnocline

English

Etymology

Ancient Greek πυκνός (puknós, “dense”) +‎ -cline

Noun

pycnocline (plural pycnoclines)

1. A boundary layer in a body of water between areas of different temperature or salinity.

   The bay has fresher water at the surface and saltier water at the bottom, in between is the pycnocline.

2. A layer of water where the density changes rapidly with depth