Baumé scale
nounMedical Definition of Baumé scale
: either of two hydrometer scales that indicate specific gravity in arbitrarily defined but constant degrees:
a
: one for liquids lighter than water on which specific gravity S at 60°F (15.6°C) is related to the Baumé reading n in degrees by S = 140 ÷ (130 + n)
b
: one for liquids heavier than water on which specific gravity S at 60°F (15.6°C) is related to the Baumé reading n in degrees by S = 145 ÷ (145 − n)