"Hypodermic injection" is a medical term that refers to delivering medication or fluid into the body through a needle. This procedure is commonly known as an injection, shot, or shot injection. It can also be referred to as an intramuscular injection when it is administered into the muscle tissue. Additionally, depending on the intended action of the injection, it may be referred to as an immunization, vaccination, or inoculation. Other synonyms for hypodermic injection include jab, prick, needle stick, and injection therapy. While many people may experience some discomfort or anxiety with injections, these procedures are an important tool used by medical professionals to deliver treatment to patients.