densitometry

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densitometry

 [den″sĭ-tom´ĕ-tre]
determination of variations in density by comparison with that of another material or with a certain standard.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

den·si·tom·e·try

(den'si-tom'ĕ-trē),
A procedure using a densitometer.
Farlex Partner Medical Dictionary © Farlex 2012

un·der·wat·er weigh·ing

(ŭn'dĕr-waw'tĕr wā'ing)
Assessment of body volume by measuring a person's weight in air and again under water; loss of scale weight (corrected for water density) equals body volume. Body density (body mass:volume ratio) is then used to compute percent body fat.
Synonym(s): densitometry, hydrodensitometry, hydrostatic weighing.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012