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

• shielders
• shield fern
• shield ferns
• shield-hand
• sawfish
• sawfishes
• sawflies
• sawfly
• saw frame
• saw frames
• saw gate
• saw gates
• sawgrass
• sawgrasses
• sawhorse
• sawhorses
• sawing
• sawings
• saw kerf
• sawlike
• sawmill
• sawmills
• sawn
• sawney
• Sawney