'imbalance' definitions:

Definition of 'imbalance'

From: WordNet
noun
A lack of balance or state of disequilibrium; "a hormonal imbalance" [syn: imbalance, instability, unbalance] [ant: balance]
noun
(mathematics) a lack of symmetry [syn: asymmetry, dissymmetry, imbalance] [ant: balance, correspondence, symmetricalness, symmetry]