What is the same thing as hypertonic

having reduced pressure or tone, in particular.

having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid.

of or in a state of abnormally low muscle tone.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

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