1. An instrument for determining the specific gravities of liquids, and the strength accordingly of spirituous liquors.

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

• hydromentes,
• gydrometer,
• bydrometer,
• nydrometer,
• jydrometer,
• uydrometer,
• hudrometer,
• hydrometter,
• hydromater,
• hydrometery,
• hysometer,
• hypsometre,
• hipsometer,
• hypsometery,
• estrometer,
• denrometer,
• Hadometer,
• hrometer,
• hydrometor,
• Nytrometer

• hydromys,
• hydromyinae,
• hydromantes,
• hydromancy,
• hydromel,
• hydromorphone,
• hydromancer,
• hydrometry,
• hydrometric.

The adjective form of the word "hydrometer" is "hydrometric".

The plural of the "hydrometer" can be the "hydrometers".

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