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

• subbing
• subbings
• subbranch
• subbranches
• subbreed
• subbreeds
• subbureau
• subbureaus
• subbureaux
• Subbuteo
• subby
• subcabinet
• subcabinets
• subcaliber
• subcalibre
• subcantor
• subcantors
• subcapsular
• subcardinal
• subcardinals
• subcarrier
• subcarriers
• subcartilaginous
• subcaste
• subcastes