English
humidify
From humid + -ify.
A compound of humid + -ify
Proto-Indo-European *wegʷ- ‘wet, moist’
…
Latin ūmeō ‘to be moist, wet or damp’
Latin ūmidus ‘moist, humid, damp, dank, wet’
Latin hūmidus ‘moist’
Old French humide
English humid
Today it means
verb To increase the humidity in the air.
Language periods are conventional ranges, not dates for this word.
Etymograph / humidify