Dictionary

radiopaque en · ADJ

Pronunciation

• /ˌɹæɪ̯.diː.əʉ̯ˈpæɪ̯k/ (Australia, New-Zealand, also)
• /ˌɹe.di.oˈpek/ (Scotland)
• rā′dē-ō-pāk′
• /ˌɹeɪ̯.diː.əʊ̯ˈpeɪ̯k/ (Received-Pronunciation)
• /ˌɹæɪ̯.diː.ɐʉ̯ˈpæɪ̯k/ (Australia, New-Zealand)
• /ˌɹeɪ̯.di.oʊ̯ˈpeɪ̯k/ (Canada, General-American)

Etymology

Etymology tree Latin radiusder. English radi- English opaque English radiopaque From radi- (staff) + opaque. First attested in 1917.

Meanings

1. Impenetrable to X-rays and other radiation.
   • We may coin the word ‘radiopaque’, and it would definitely mean ‘impervious to the X-ray’.[…]. From radiopaque we would likewise have the useful term radiopacity. [1917, R. Ottolengui, Dental Items of Interest, volume 39, quoted in OED, Dental Items of Interest Publishing Company, page 143:

Forms

Antonyms

radiolucent

Deriveds

nonradiopaque · radiopacity

Relateds

radio · opacity