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Browse the Medical Dictionary:: A; B; C; D; E; F; G; H; I; J; K; L; M; N; O; P; Q; R; S; T; U; V; W; X; Y; Z; #

half-value layer

Main Entry: half–val·ue layer

Pronunciation: \-ˈval-(ˌ)yü-, -ˈval-yə-\

Function: noun

: the thickness of an absorbing substance necessary to reduce by one half the initial intensity of the radiation passing through it

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