thermoclines

/ˈθɜrməˌklaɪnz/
noun
  1. Plural of thermocline; multiple layers in bodies of water where temperature changes rapidly with depth.
    • The research vessel measured thermoclines in several tropical oceans.
    • Oceanographers map thermoclines to track how heat moves through the sea.
    • Different lakes can have thermoclines at various depths depending on the season.
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