isotonic
/ˌaɪsəʊˈtɒnɪk/adjective
1
- Physiology (of muscle action) taking place with normal contraction【生理】（肌肉活动）等张的。
2
- Physiology denoting or relating to a solution having the same osmotic pressure as some other solution, especially one in a cell or a body fluid【生理】等渗的。
2.1
- (of a drink) containing essential salts and minerals in the same concentration as in the body and intended to replace those lost as a result of sweating during vigorous exercise（剧烈运动用饮料）等强的（含同人体浓度基本盐类与矿物的）。
派生词
isotonically
adverbisotonicity
noun词源
early 19th cent. （as a musical term designating a system of tuning, characterized by equal intervals）： from Greek isotonos, from isos 'equal' + tonos 'tone'.