Humidifier (noun)

A device for increasing humidity in the air, typically used to prevent dryness in the air in a room or building.

Origin:

Early 20th century: from humidify + -er.

Examples:

1. She used a humidifier to keep the air in her room moist during the dry winter months.
2. The humidifier helps to alleviate dry skin and sinus problems.
3. I have a humidifier in my room to help me breathe better at night.
4. The humidifier is helpful in preventing dryness and cracking of wooden furniture.
5. The humidifier can be set to a desired humidity level using a built-in hygrometer.