Definition of "intranasal" [intranasal]

• Within the nose. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The Food and Drug Administration in 2009 warned consumers not to use any intranasal zinc products because of concerns that it can make people lose their sense of smell."
• "New versions of existing vaccines: acellular pertussis vaccine (DTaP - 1997); intranasal influenza (2004)"
• "The phenomenon of acute tolerance to cocaine has been linked with the fact that the euphoric effects of cocaine after I.V. or intranasal administration decrease faster than the corresponding cocaine blood level. 7,12 An often dysphoric "crash" may occur after the intense euphoria of I.V. or inhalation use leading to frequent repeated doses in an effort to prevent the "crash.""