<noun.linkdef> the mutuality of their affection was obvious
a reciprocal relation between interdependent entities (objects or individuals or groups)
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Mutuality \Mu`tu*al"i*ty\, n. [Cf. F. mutualit['e].] 1. The quality of correlation; reciprocation; interchange; interaction; interdependence.
2. (Law) Reciprocity of consideration. --Wharton.
Meanwhile, mutuality within the framework of the 1986 Building Society Act imposes regulatory constraints on building societies' attempts to become fully-fledged financial services groups.
Buber maintained that human wholeness, its vitalizing reality, exists only "in between" separate persons, other creatures, nature and God _ a connecting mutuality recognized only in genuine encounter.
The concept of mutuality can no longer be taken for granted - except by building society and life company managers.