The meaning of the Acronym IRV is...

IRV is

• Inspiratory Reserve Volume

More Meanings For IRV:

• International Reference Version
• Insightful Recreational Vehicle
• Inspiratory Reserve Volume
• Income Rate And Value
• Improved Recovery Vehicle
• Improved Inter-Range Vector
• Isotope Reentry Vehicle
• Incident Response Vehicle
• Improved Recovery Vehicle
• Instant Runoff Voting

IRV is also in:

• Military
• NASA
• Physiology
• Police
• Stock Exchange
• Transportation
• Unfiled
• US Government