humidity

/hjuːˈmɪdəti/
dampness in the air

The humidity in the rainforest is so high that clothes feel damp within minutes.

The air is extremely moist, causing fabrics to absorb moisture quickly.


technical

The amount of water vapor present in the air.

Meteorologists measure humidity to predict weather patterns.

Experts analyze moisture levels in the air to forecast changes in weather.

Humidity is often expressed as a percentage (relative humidity) or absolute value (grams of water per cubic meter).

general

Dampness or moisture in the air, often causing a heavy, sticky feeling.

I can't stand the humidity during summer—it makes everything feel so sticky.

The high moisture levels in the air create an uncomfortable, clammy sensation.

Used interchangeably with 'dampness' in everyday speech, though technically distinct in meteorology.

Collocations

high humidityvery moist airlow humidityvery dry airrelative humiditypercentage of moisture in the air compared to its capacity

Related Phrases

humidity indexphrase
a measure combining temperature and humidity to assess discomfort
humidity controlphrase
regulating moisture levels in indoor environments

Pro Tip

Distinguish humidity from moisture

Humidity refers specifically to water vapor in the air, while moisture can describe liquid water in any form (e.g., on surfaces or in materials).

Gold Rule

Use 'humidity' for air moisture

Reserve 'humidity' for discussions about water vapor in the atmosphere. For liquids on surfaces, use 'dampness' or 'moisture'.

Word Origin

From Latin *humiditas*, meaning 'moisture' or 'dampness', derived from *humidus* ('wet, moist'), related to *humus* ('earth, ground').

Usage Notes

Humidity is a key factor in weather reports and indoor comfort. High humidity can exacerbate respiratory issues and promote mold growth, while low humidity may cause dry skin or static electricity.

Word Breakdown

humid-
wet, moist
root
+
-ity
quality or state of
suffix
English Dictionary