noun, noun which may take the genitive case particle 'no'
hypodermic injection; subcutaneous injection
Medical term for an injection given under the skin, as opposed to intravenous or intramuscular.
医師は患者に皮下注射を行った。
The doctor gave the patient a hypodermic injection.
皮下注射の針は細い。
The needle for a subcutaneous injection is thin.
Compound of 皮下 (hika, 'under the skin') and 注射 (chūsha, 'injection').