What does "hygrostat" mean?

A device that maintains a constant level of humidity

What is a synonym for "hygrostat"?

Common synonyms include: humidor, hygrometer.

Pronounced //ˈhaɪɡɹəʊstat//.

/ˈhaɪɡɹəʊstat/ noun

noun ·Rare ·Advanced level

Noun

From hygro- + -stat.