Wiktionary
n. A lightless, soundproof tank inside which a subject floats in salt water at skin temperature. They were originally used to test the effects of sensory deprivation and are now used for meditation and relaxation.
Wikipedia
An isolation tank is a lightless, soundproof tank inside which subjects float in salt water at skin temperature. They were first used by John C. Lilly in 1954 to test the effects of sensory deprivation. Such tanks are now also used for meditation and relaxation and in alternative medicine. The isolation tank was originally called the sensory deprivation tank. Other names for the isolation tank include flotation tank, float tank, John C. Lilly tank, REST tank, and sensory attenuation tank.
Usage examples of "isolation tank".
A bond of terrible strength had been welded between them in the confinement of the isolation tank.
That was what he'd been concealing when he talked to her in the isolation tank.
As he climbed the steps into the truck's isolation tank, he heard the faint hum of the air recirculator and saw the purple gleam of ultraviolet lights.
You're locked in the smallest isolation tank in the whole wide world, Koratb, and it isn't about to get any bigger.
You're locked in the smallest isolation tank in the whole wide world, Korath, and it isn't about to get any bigger.
For the better part of a minute the room was silent as an isolation tank as each member apparently tried to track through the tangle of implications.
He was contained inside a solid steel isolation tank, surrounded by control systems, lit by the glowing monitor screens.
I had him in the isolation tank, county jail, maybe three years, two--ahhh, I don't remember --a while ago, anyway.
Numbly, without protest or eagerness, Michelle slipped back into the isolation tank for additional work.
You spent twenty minutes in your isolation tank to eliminate any negativity before retiring.