/ ˌhaɪpəˈdɜːmɪk; NAmE -ˈdɜːrm-/ (also ˌhypodermic ˈneedle , ˌhypodermic ˈsyringe ) noun
a medical instrument with a long thin needle that is used to give sb an injection under their skin
► hypo·der·mic adjective :
a hypodermic injection (= one under the skin)
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WORD ORIGIN
mid 19th cent.: from hypo- under + Greek derma skin + -ic .