n. The measurement of optical density by use of a densitometer
n. The measurement of body density
the GNU version of the Collaborative International Dictionary of English
n. measuring the optical density of a substance by shining light through it and measuring the intensity of the transmitted light.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. measuring the optical density of a substance by shining light on it and measuring its transmission
Word Usage
"Osteoporosis thinning of the bones: Have a bone density test, also called a densitometry or DXA scan, beginning at age sixty-five to screen for osteoporosis."