hygroscope

A scientific instrument that indicates changes in the relative humidity of the air.

• 🇫🇷Instrument scientifique qui indique les variations de l'humidité relative de l'air.

1. Humidity indicator C2 formal scientific

   An instrument that shows changes in the relative humidity of the atmosphere, often by using a material that absorbs moisture.

   • The hygroscope indicated a sharp increase in humidity before the storm.
   • Early sailors used a simple hygroscope to predict weather changes.
   • The museum's hygroscope helps maintain optimal conditions for preserving artifacts.

   🇫🇷Hygroscope (indicateur d'humidité)

   Synonymes: hygrometer

• hygroscopes plural form
• hygroscopes' possessive plural form
• hygroscope's possessive singular form