hygrometer

Meanings

1. 1
   noun

   an instrument for measuring humidity, especially the relative humidity of the air

   The conservator checked the hygrometer before moving the manuscript into storage.

Borrowed from French hygrometre, formed from hygro-, 'moisture,' + -meter, 'measuring instrument.' Hygro- ultimately comes from Greek hygros, 'wet or moist,' while -meter comes from Greek metron, 'measure.'

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