Medical Definition of imbalance
: lack of balance : the state of being out of equilibrium or out of proportion: asa: loss of parallel relation between the optical axes of the eyes caused by faulty action of the extrinsic muscles and often resulting in diplopiab: absence of biological equilibrium <a vitamin imbalance> <if the ductus arteriosus fails to close, a circulatory imbalance results—E. B. Steen & Ashley Montagu>c: a disproportion between the number of males and females in a population
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