D defs.my
Entry 1 sense Webster, 1913

Areometer

· A·re·om·e·ter · IPA /ɛːriːˈɒmɪtə/
01 n. An instrument for measuring the specific gravity of fluids; a form hydrometer.
  1. 1.
    An instrument for measuring the specific gravity of fluids; a form hydrometer.(Physics)