1. an instrument for measuring the humidity of the air or other gases

Examples

• The meteorologist used a hygrometer to measure the moisture content in the atmosphere.
• Digital hygrometers are commonly used in greenhouses to monitor plant growing conditions.
• The museum installed hygrometers to protect valuable artifacts from humidity damage.
• Weather stations rely on hygrometers to provide accurate humidity readings.
• She checked the hygrometer before storing her violin to ensure proper humidity levels.
• The laboratory’s hygrometer indicated that the air was too dry for the experiment.