The Collaborative International Dictionary of English v.0.48:

Hypodermic \Hyp`o*der"mic\, a. [See Hypoderma.]
   Of or pertaining to the parts under the skin.
   [1913 Webster]

   Hypodermic medication, the application of remedies under
      the epidermis, usually by means of a small syringe, called
      the hypodermic syringe. -- Hyp`o*der"mic*al*ly, adv.
      [1913 Webster]