n :  lack of balance  :  the state of being out of equilibrium or out of proportion: as  a  :  loss of parallel relation between the optical axes of the eyes caused by faulty action of the extrinsic muscles and often resulting in diplopia  b  :  absence of biological equilibrium <a vitamin >  <if the ductus arteriosus fails to close, a circulatory results -E. B. Steen & Ashley Montagu>   c  :  a disproportion between the number of males and females in a population im*bal*anced adj 
 
 
 
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