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critical organ

critical organ in Medicine

critical organ n.
The organ or physiological system that would first be subjected to radiation in excess of the maximum permissible amount as the dose of a radioactive material is increased.

The American HeritageĀ® Stedman's Medical Dictionary
Copyright Ā© 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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