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?"
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.
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?"
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.