\Af*fil"i*ate\, v. t. [imp. & p. p. {Affiliated}; p.
pr. & vb. n. {Affiliating}.] [LL. adfiliare, affiliare, to
adopt as son; ad + filius son: cf. F. affilier.]
1. To adopt; to receive into a family as a son; hence, to
   bring or receive into close connection; to ally.
         Is the soul affiliated to God, or is it estranged
         and in rebellion?                     --I. Taylor.
2. To fix the paternity of; -- said of an illegitimate child;
   as, to affiliate the child to (or on or upon) one man
   rather than another.
3. To connect in the way of descent; to trace origin to.
         How do these facts tend to affiliate the faculty of
         hearing upon the aboriginal vegetative processes?
                                               --H. Spencer.
4. To attach (to) or unite (with); to receive into a society
   as a member, and initiate into its mysteries, plans, etc.;
   -- followed by to or with.
{Affiliated societies}, societies connected with a central
   society, or with each other.

\Af*fil"i*ate\, v. i.
To connect or associate one's self; -- followed by with; as,
they affiliate with no party.