I. hy ‧ po ‧ der ‧ mic 1 /ˌhaɪpəˈdɜːmɪk◂ $ -ɜːr-/ BrE AmE noun [countable]
an instrument with a very thin hollow needle used for putting drugs directly into the body through the skin SYN syringe
II. hypodermic 2 BrE AmE adjective
[ Date: 1800-1900 ; Origin: hypo- + Greek derma 'skin' ]
used to give an ↑ injection beneath the skin:
a hypodermic needle