Alpha stage software — under active development. Data may be incomplete or change without notice.

↑↓ navigate open esc close
US /ˈɛks ˌɹeɪ/ UK /ˈɛks ɹeɪ/
Freq #6428

Meanings

  1. 1
  2. 2
  3. 3
  4. 4

Thesaurus

1 noun · a photograph of the inside... roentgenogram
2 noun · a type of invisible... roentgen-ray
Forms x-rayedx-rayingx-rays

Etymology

From X + ray, a calque of German X-Strahl, coined by Wilhelm Röntgen upon his discovery of the rays in 1895, where X signifies their unknown nature. The chess sense is metaphorical, referring to control passing through a seemingly solid barrier.

Topics

markdown

Send feedback

What is this about?

Choose the closest match.

Optional — only if you'd like a reply.