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radiolucent

[rey-dee-oh-loo-suh nt]
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adjective
  1. almost entirely transparent to radiation; almost entirely invisible in x-ray photographs and under fluoroscopy.
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Compare radiopaque, radiotransparent.

Origin of radiolucent

First recorded in 1915–20; radio- + lucent
Related formsra·di·o·lu·cence, ra·di·o·lu·cen·cy, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for radiolucency

radiolucent

adjective
  1. almost transparent to electromagnetic radiation, esp X-rays
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
radiolucency in Medicine

radiolucent

(rā′dē-ō-lōō′sənt)
adj.
  1. Characterized by allowing passage of x-rays or other radiation; not radiopaque.
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Related formsra′di•o•lu′cen•cy n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.