Law. [f. ASSIGN + -OR, refashioned form of AF. -our; = F. assigneur.] One who assigns or makes over a right or property. (Correlative with assignee.)

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1668.  Child, Disc. Trade (1698), 137. After such Assignment it shall not be in the power of any Assignor to … discharge the Debt.

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1875.  Poste, Gaius, III. 431. Any creditor intermediate between the original assignor and the final assignee.

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