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an instrument for measuring the penetrating power of x-rays; qualimeter.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


An obsolete instrument for measuring the penetrating power of x-rays from any given source.
[penetration + G. metron, measure]
Farlex Partner Medical Dictionary © Farlex 2012


An obsolete device formerly used to quantify an X-ray’s penetrability, or “hardness”.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

step wedge

(step wej)
Triangular aluminum device placed over a radiographic film during exposure to determine the penetrating ability of an x-ray beam.
Synonym(s): penetrometer.
Medical Dictionary for the Dental Professions © Farlex 2012
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