معنی کلمه : hydrometer
English
Having six angles; hexagonal. [R.] Dryden.
An instrument for determining the specific gravities of liquids, and thence the strength spirituous liquors, saline solutions, etc.

Having six angles; hexagonal. [R.] Dryden.
An instrument for determining the specific gravities of liquids, and thence the strength spirituous liquors, saline solutions, etc.