humidify

verb

to render humid or moist

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Wiktionary

Pronunciation: /hjuːˈmɪdɪfaɪ/

verb

Etymology: Etymology tree Latin ūmeō Proto-Indo-European *dʰeh₁-der. Proto-Italic *-iðos Latin -idus Latin ūmidus Latin hūmidusder. Old French humideder. English humid Latin -i- Proto-Indo-European *dʰeh₁-der. Proto-Italic *-fakāō Latin -ficō Latin -ificāreder. Old French -ifierbor. Middle English -ifien English -ify English humidify From humid + -ify.

To increase the humidity in the air.
“The air-handling equipment humidifies, dehumidifies, and distributes the correct amount of fresh air into every zone and eliminates all smoke, dust, and odors, with electric precipitrons.”