{ Del"phin, Del"phine } (?), a. [See Dauphin.] Pertaining to the dauphin of France; as, the Delphin classics, an edition of the Latin classics, prepared in the reign of Louis XIV., for the use of the dauphin (in usum Delphini).

Del"phin, n. [L. delphinus a dolphin.] (Chem.) A fatty substance contained in the oil of the dolphin and the porpoise; -- called also phocenin.