In psychiatry, all the factors that determine a particular action. [L.L. constellatio, fr. cum, together, + stella, star]
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con·stel·la·tion .kän(t)-stə-'lā-shən n a set of ideas, conditions, symptoms, or traits that fall into or appear to fall into a pattern: as
a) a group of stimulus conditions or factors affecting personality and behavior development <the way in which family \constellation and handling of punishment influenced this particular boy (S. B. Sarason)>
b) a group of behavioral or personality traits
Medical dictionary. 2011.