Medical Dictionary

half–value layer

noun half–val·ue layer \-ˈval-(ˌ)yü-, -ˈval-yə-\

Medical Definition of HALF-VALUE LAYER

:  the thickness of an absorbing substance necessary to reduce by one half the initial intensity of the radiation passing through it
April 25, 2015
lissome Hear it
nimble or easily flexed
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