Source : Webster's Revised Unabridged Dictionary (1913)

   {Phenol alcohol} (Chem.), any one of series of derivatives of
      phenol and carbinol which have the properties of both
      combined; thus, saligenin is a phenol alcohol.

   {Phenol aldehyde} (Chem.), any one of a series of compounds
      having both phenol and aldehyde properties.

   {Phenol phthalein}. See under {Phthalein}.