[1] : The Collaborative International Dictionary of English v.0.48

relationship \rela"tionship\, n.
   the state of being related by kindred, affinity, or other
   alliance. --mason.
   1913 webster

[2] : WordNet (r) 2.0

relationship
     n 1: a relation between people; `relationship' is often used
          where `relation' would serve, as in `the relationship
          between inflation and unemployment', but the preferred
          usage of `relationship' is for human relations or states
          of relatedness; "the relationship between mothers and
          their children" syn: human relationship
     2: a state of connectedness between people especially an
        emotional connection; "he didn't want his wife to know of
        the relationship"
     3: a state involving mutual dealings between people or parties
        or countries
     4: state of relatedness or connection by blood or marriage or
        adoption syn: kinship, family relationship
see also:
human relationship kinship family relationship 

[3] : Moby Thesaurus II by Grady Ward, 1.0

74 moby thesaurus words for "relationship":
   accord, addition, adjunct, affairs, affiliation, affinity,
   agnation, alliance, ancestry, approximation, assemblage,
   association, blood, blood relationship, bond, brotherhood,
   brothership, closeness, cognation, combination, common ancestry,
   common descent, connectedness, connection, consanguinity,
   contiguity, contrariety, cousinhood, cousinship, dealings,
   deduction, disjunction, enation, fatherhood, filiation, fraternity,
   homology, intercourse, intimacy, junction, kindred, kinship,
   liaison, link, linkage, linking, maternity, matrilineage,
   matriliny, matrisib, matrocliny, motherhood, mutual attraction,
   nearness, paternity, patrilineage, patriliny, patrisib, patrocliny,
   propinquity, proximity, rapport, relatedness, relation, relations,
   sibship, similarity, sisterhood, sistership, sympathy, tie, tie-in,
   ties of blood, union

Relationship >> R Words
Relationship, definition of term: Relationship
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