What does hypodermic mean?
Hypodermic describes an injection, needle, or syringe designed to deliver a substance beneath the skin rather than into a vein or directly onto the skin's surface. The adjective is especially common in the established phrases hypodermic needle and hypodermic syringe, while hypodermic injection is also widely understood. In contemporary medicine, subcutaneous injection is often the more specific modern term for an injection into the layer of fat beneath the skin. The word comes from Greek roots meaning “under” and “skin,” accurately describing where a hypodermic needle is placed. Although related terms such as intradermal and intravenous describe different routes of administration, hypodermic remains a familiar term for injections given beneath the skin. It is used in clinical, pharmaceutical, and general informational contexts.
Relating to or designed for injection beneath the skin.
"A trained professional administered the medicine with a hypodermic needle."
Most often used in the combinations hypodermic needle, hypodermic syringe, and hypodermic injection.
A small syringe or needle used to inject a substance beneath the skin.
"The clinician prepared a hypodermic before giving the vaccination."
The noun is established but less common in modern clinical wording than the full phrase hypodermic syringe.
The plural is used when referring to multiple hypodermic syringes or needles.
"The nurse laid out several sterile hypodermics on the tray."
The word literally points beneath the skin: hypo means under and dermic relates to skin.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of hypodermic
Hypodermic was formed in the 19th century from the combining form hypo-, meaning “under,” and dermic, meaning “relating to skin,” with the suffix -ic. Its underlying elements come from Greek hypo, “under,” and derma, “skin.” The same roots appear in related words such as epidermis, dermis, and hypothermia.
Related word forms
How hypodermic is actually used
In modern medical usage, hypodermic is most often used with needle, syringe, and injection. The noun use is understood, especially in older or clinical contexts, but the full phrase hypodermic syringe is more explicit.
Easily confused with hypodermic
A hypodermic injection is delivered beneath the skin, whereas an intravenous injection is delivered directly into a vein.