n 1  :  the state of being related or interrelated <research into the between diet, blood, cholesterol levels, and coronary heart disease -Current Biog.>   2 a  :  a state of affairs existing between those having relations or dealings <called on to assume the role of personal advisor in the doctor-patient -Jour. Amer. Med. Assoc.>   b  :  an emotional attachment between individuals <the role of empathic physiological communication in the formation of a meaningful >  .
 
 
 
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