What does transcutaneous mean?
Transcutaneous means across or through the skin, and the word is especially common in medicine and pharmacology. It describes a substance, treatment, or delivery method that enters the body by passing through the skin rather than being swallowed, injected into a vein, or applied only to the surface. A transcutaneous patch, for example, releases medication gradually so that it can be absorbed through the skin. The term is formal and technical, appearing in discussions of drug delivery, vaccination, diagnostics, and medical research. It is related to transdermal, which more specifically emphasizes delivery through the skin, often by a patch, and to percutaneous, which often refers to a needle-based injection. Transcutaneous is therefore useful when describing the route by which a substance crosses the skin, especially when the exact method is general or not yet specified.
adjectiveRelating to or passing across the skin. In medicine, it describes substances, treatments, or delivery methods that are absorbed or administered through the skin.
- Passing across or through the skin, especially in relation to the absorption or administration of a substance.
"The medication is available in a transcutaneous patch for controlled absorption over several hours."
"Researchers are studying transcutaneous insulin delivery as an alternative to repeated injections."
"The treatment uses a transcutaneous patch to deliver the drug steadily through the skin."
Transcutaneous is the clinical shorthand for medicines that take the skin route into the bloodstream.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does transcutaneous come from?
Transcutaneous was formed in English from Latin trans, meaning “across,” and cutaneus, meaning “of or relating to the skin.” The Latin adjective cutaneus itself derives from cutis, meaning “skin.” The same root appears in English words such as cutaneous, subcutaneous, and intracutaneous, reflecting a shared medical vocabulary based on Latin.
Related word forms
How transcutaneous is actually used
This is primarily a formal medical and scientific term. It is more specific than simply “topical,” which can refer to a substance placed on the skin's surface without necessarily being absorbed through it.
Easily confused with transcutaneous
Transcutaneous is a broad medical term for something passing across the skin, whereas transdermal usually specifies delivery through the skin, especially by a patch.
Percutaneous more specifically describes an injection or procedure that passes through the skin with a needle or similar device.