from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A specially graduated hydrometer that directly indicates the concentration of salt in a solution. Also called salinometer.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A hydrometer used to measure the concentration of salt in a solution
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for measuring the amount of salt present in any given solution.
from The Century Dictionary and Cyclopedia
- n. Same as salinometer, 1.
Sorry, no etymologies found.
The piece of apparatus used for the purpose is endowed with a variety of names -- sp.g. spindle, hydrometer, areometer, salimeter, alcoholimeter, lactometer, and so on, according to the special liquid upon which it is intended to be used.