Definition of "relative humidity" []

• The ratio of the amount of water vapor in the air at a specific temperature to the maximum amount that the air could hold at that temperature, expressed as a percentage. (noun)

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.

• "I'd also need a controlled temperature of 68° Fahrenheit or so to do all this glueing and varnishing, and as I'm very keen on knowing what the relative humidity is playing at around furniture, another battle with Adriana was obviously called for."