What is Ad Damnum?

Legal Definition
Pleading. To the damage. In all personal and mixed actions, with the exception of actions of debt qui tam, where the plaintiff has sustained no damages, the declaration concludes ad damnum. Archb. Civ. Pl. 169.
-- Bouviers Law Dictionary
Legal Definition
In plcading. "To the damage." The technical name of that clause of the writ or declaration which contains a statement of the plaintiff's money loss or the damages which he claims. Cole v. Hayes, 78 Me. 539, 7 Atl. 391; Vincent v. Life Ass'n, 75 Co.nn. 650, 55 Atl. 177.
-- Black's Law Dictionary
Legal Definition
To the damage.
-- Ballentine's Law Dictionary