isotonic /ī-sō-tonˈik/

1. Having the same tone, tension or osmotic pressure
2. (of muscular contraction) shortening the muscle fibres and moving a joint
3. (of an energy drink) containing salts and minerals of the same concentration as in the body

isotonicˈity noun

• fluidizing
• fluid mechanics
• fluidness
• fluidnesses
• fluid ounce
• fluids
• fluier
• fluiest
• fluke
• fluked
• flukes
• fluke-worm
• flukey
• flukier
• flukiest
• flukily
• flukiness
• flukinesses
• fluking
• fluky
• flume
• flumes
• flummeries
• flummery
• flummox