estrangement

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Related to estrange: disaffect, regress

estrangement

[estrānj′mənt]
Etymology: L, extraneus, not belonging
1 a psychological effect of the separation of a mother from her newborn required when the infant is ill or premature or has a congenital defect, thereby diverting the mother from establishing a normal relationship with her child.
2 the feeling that external objects have a strange, unfamiliar, or unreal quality, caused by a failure of cathexis of the external ego boundary, one of whose functions is to identify external objects as real and familiar.