intranasal

American  

[in-truh-ney-zuhl] / ˌɪn trəˈneɪ zəl /

adjective

1. occurring within or administered through the nose.

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Other Word Forms

• intranasally
  adverb

Etymology

Origin of intranasal

First recorded in 1885–90; intra- + nasal ¹

Example Sentences

The scientists are testing the vaccine as a regular shot and as an intranasal spray with the idea of stopping the virus in the respiratory tract before it causes a broad infection.

From Salon • May 6, 2025

There is growing evidence that intranasal vaccines provide greater protection at mucosal surfaces, making this a vaccination route that could reduce break-through infections and subsequent transmission of the virus.

From Science Daily • Jan. 10, 2024

The FDA must approve vaccines for use by the public in the U.S., and this intranasal vaccine is not one of the COVID-19 shots with approval or emergency use authorization.

From Seattle Times • Oct. 13, 2023

She’s working on developing an intranasal RSV vaccine for babies, which is currently in Phase I trial, and will also target human parainfluenza virus infection in children.

From Slate • Nov. 9, 2022

There is one intranasal vaccine given now — FluMist — but it uses a weak version of the live flu virus, which is not safe for immunocompromised people.

From The Verge • Jun. 23, 2022