radiopaqueadj.
/ˌreɪdɪə(ʊ)ˈpeɪk/, U.S. /ˌreɪdioʊˈpeɪk/ Impervious to X-rays; esp. visible as a shadowed area on an X-ray photograph or scan.
ΘΚΠ
the world > matter > physics > atomic nucleus > radioactivity > X-rays > [adjective] > impervious to X-rays
opaque1860
radiopaque1917
radiodense1960
1917 R. Ottolengui in Dental Items of Interest Feb. 143 We may coin the word ‘radiopaque’, and it would definitely mean ‘impervious to the X-ray’.
1925 Lancet 17 Oct. 809/1 Foreign bodies [in the eye]..could be classified into radio-opaque and radio-transparent.
1940 Brit. Jrnl. Radiol. 13 261/2 To determine the depth of the foreign body, the observer places a radio-opaque guide-mark on the skin..; then he moves the X-ray tube horizontally.
1971 G. H. Bourne Ape People vii. 186 A series of cinemagraphs were taken with radiopaque material being injected into different chambers of the heart.
1995 Daily Tel. 27 July 8/4 Radio-opaque dye injected via the catheter into the blood vessels of the brain indicates through X-ray pictures where the aneurysm lies.
This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).
<
adj.1917- full-swelling
- full-tank
- full-text
- full-thickness
- full-thriven
- full-throated
- full-throatedly
- full-throttle
- full-timber
- full-time score
- full-time whistle
- full-timed
- full-timer
- full-toned
- full-top
- full-trimmed
- full-trussed
- full-tuned
- full-tushed
- full-tusked
- full-uddered
- full-value
- full-voice
- full-voiced
- full-waxen