n. 1. a. The condition or fact of being the child of a certain parent. b. Law Judicial determination of the paternity of a nonmarital child for the purposes of compelling support. 2. A line of descent; derivation. 3. a. The act or fact of forming a new branch, as of a society or language group. b. The branch thus formed. [Medieval Latin fīliātiō, fīliātiōn-, quality of being a son, legal right of a son, from Latin fīlius, son; see dhē(i)- in the Appendix of Indo-European roots.] fili·ate′ v. |
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