[n] the act of becoming formally connected or joined; "welcomed the affiliation of the research center with the university"
[n] a social or business relationship; "a valuable financial affiliation"; "he was sorry he had to sever his ties with other members of the team"; "many close associations with England"
\Af*fil`i*a"tion\, n. [F. affiliation, LL. affiliatio.]
1. Adoption; association or reception as a member in or of the same family or society.
2. (Law) The establishment or ascertaining of parentage; the assignment of a child, as a bastard, to its father; filiation.
3. Connection in the way of descent. --H. Spencer.