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]

The Collaborative International Dictionary of English v.0.48:

hypodermic \hyp`o*der"mic\, n.
   A hypodermic needle[2].
   [PJC]

WordNet (r) 3.0 (2006):

hypodermic
    adj 1: relating to or located below the epidermis; "hypodermic
           needle"; "subcutaneous implant" [syn: hypodermic,
           subcutaneous]
    n 1: a piston syringe that is fitted with a hypodermic needle
         for giving injections [syn: hypodermic syringe,
         hypodermic, hypo]