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

• protesting
• protestingly
• protestor
• protestors
• protests
• proteus
• proteuses
• Protevangelium
• prothalamia
• prothalamion
• prothalamium
• prothalli
• prothallia
• prothallial
• prothallic
• prothallium
• prothalloid
• prothallus
• protheses
• prothesis
• prothetic
• prothonotarial
• prothonotariat
• prothonotariats
• prothonotaries