A device for removing the moisture content from air(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "dehumidifier" in a sentence
"Their electrical consumption in comparison with an air conditioner or a space dehumidifier is much lower, on the order of a standard light bulb of the same wattage."
"If the relative humidity is above the 50 percent mark, a dehumidifier is a smart investment."
"If you live in a moist area a dehumidifier might be the only thing that keeps your house from rotting and slowly falling apart."