1. A clock which told the time by the fall of water from a vessel with an aperture at the bottom; an instrument to indicate moisture in the air.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• hyroscope,
• bydroscope,
• nydroscope,
• jydroscope,
• uydroscope,
• yydroscope,
• htdroscope,
• hgdroscope,
• hhdroscope,
• hudroscope,
• hyrdroscope,
• hyderoscope,
• hydroscopse,
• hydroscop,
• hydorscope,
• hydroscpoe,
• hydroscopee,
• Hidroscope,
• Hydroscopie,
• Hudroscopee

The adjective form of the word "hydroscope" is "hydroscopic".

The plural of the "Hydroscope" can be the "hydroscopes".

The singular of the "Hydroscope" can be the "Hydroscope".