▪ a quantity representing the amount of water vapour in the atmosphere or in a gas: "the temperature is seventy-seven, the humidity in the low thirties"
▪ atmospheric moisture:"the humidity should be supplied by regularly spraying the leaves"
Word Originlate Middle English: from Old French humidite or Latin humiditas, from humidus (see humid).
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present. Wikipedia
