What does intranasal mean?
Intranasal is an adjective meaning within the nose or relating to something introduced or delivered through the nasal cavity. It is especially common in medicine and pharmacology, where it describes treatments, devices, and routes of administration. An intranasal vaccine is administered into the nasal passages, while an intranasal spray releases a medicine through the nose for absorption. The term is precise but technical, and it is not usually interchangeable with “transnasal,” which specifically describes passage through the nasal cavity rather than location within or administration into it. Intranasal products are notable for offering alternatives to injections, although their effectiveness and suitability can depend on the particular medicine and condition. The word is also used anatomically for structures situated within the nose. Together, these uses make “intranasal” a useful label for treatments whose connection to the nasal cavity is central to how they work.
adjectiveSituated within the nasal cavity, or introduced into or through the nose. In medicine, the term commonly describes a route of administration or a treatment delivered through the nasal passages.
- Located within the nasal cavity.
- Introduced into, or delivered through, the nasal cavity.
"The clinic offers an intranasal vaccine for seasonal influenza."
"Researchers are developing an intranasal treatment for seasonal influenza."
"The medication is available as an intranasal spray for rapid absorption."
Intranasal turns the nose into a delivery route, allowing certain medicines and vaccines to be administered without a needle.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of intranasal
The word was formed in English by combining the Latin prefix intra-, meaning “within” or “inside,” with nasal, which is based on Latin nasus, meaning “nose.” The prefix itself comes from Latin intra, “within,” and also appears in English words such as intravenous, intracranial, and intramural. The combination entered medical usage to describe anatomy, treatments, and routes of administration associated with the nasal cavity.
Related word forms
How intranasal is actually used
Most often used in medical, pharmaceutical, and pharmacological contexts. It is generally more technical than the everyday phrase “through the nose” and may describe both the physical location of a substance and the route by which it is administered.
Easily confused with intranasal
Intranasal means within or directed into the nasal cavity, whereas transnasal means passing through the nasal cavity.