n. A device that measures the optical density of a material.
n. A device that measures the specific gravity of a substance; a densimeter.
the GNU version of the Collaborative International Dictionary of English
n. an instrument for determining optical or photographic density. A variety capable of measuring optical density of a sample at a number of different wavelengths, is called a spectrophotometer.
n. same as densimeter.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a measuring instrument for determining optical or photographic density
n. a measuring instrument for determining density or specific gravity
Word Usage
"Evaluates motion picture film to determine characteristics, such as sensitivity to light, density, and exposure time required for printing, using sensitometer, densitometer, and timer lights."