What does "hypodermic" pertain to?

The term "hypodermic" is derived from Greek roots, where "hypo-" means "under" and "derma" means "skin." Therefore, "hypodermic" refers to something that is located or occurring beneath the skin. This term is often used in medical contexts, particularly when talking about injections or needles that are introduced under the skin's surface. Understanding this terminology is vital in fields such as healthcare and pharmacology, where precise language regarding injection techniques and locations is crucial. The other options do not capture the meaning of "hypodermic," as they either suggest halves, excess, or a combination of both which stray from the defined focus on being "under."