gymno-, gymn- +
(Greek: naked, nude, uncovered, bare, exposed, unclad, disrobed, undressed)
hydrogymnasium (British)
A therapeutic pool or hydrotherapy tank.
hydrogymnastic (British)
Relating to hydrogymnastics.
hydrogymnastics
Exercises performed while immersed in water.
mechanogymnastics
Gymnastic exercises done with mechanical devices; such as, a system of levers and pulleys designed to provide manipulation and exercises for the trunk and limbs; labeled by some, as the Zander apparatus.
A related "naked, nude; uncovered" word family:
nudo-, nudi-.