Source : Webster's Revised Unabridged Dictionary (1913)

Chelidonic \Chel`i*don"ic\, a. [See {Celandine}.] (Chem.)
   Of, pertaining to, or derived from, the celandine.

   {Chelidonic acid}, a weak acid extracted from the celandine
      ({Chelidonium majus}), as a white crystalline substance.