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What does RA stand for?

RA stands for Room Air

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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Other Resources:
We have 122 other meanings of RA in our Acronym Attic

Samples in periodicals archive:

Most air purifiers simply move stale room air through the unit, but PuriFresh draws in fresh air to increase oxygen levels and reduce carbon dioxide while safely sealing out irritants.