Source : Webster's Revised Unabridged Dictionary (1913)

Subcutaneous \Sub`cu*ta"ne*ous\, a.
   Situated under the skin; hypodermic. --
   {Sub`cu*ta"ne*ous*ly}, adv.

   {Subcutaneous operation} (Surg.), an operation performed
      without opening that part of the skin opposite to, or
      over, the internal section.

Source : WordNet®

subcutaneous
     adj : relating to or located below the epidermis; "hypodermic
           needle"; "subcutaneous implant" [syn: {hypodermic}]