derma ray

From Wiktionary, the free dictionary
Jump to navigation Jump to search

English[edit]

Etymology[edit]

Perhaps because they were found to cause dermatitis.

Noun[edit]

derma ray (plural derma rays)

  1. (physics, archaic) A weak radioactive ray arising from the impact of cathode particles with the molecules of gas contained in an X-ray tube or with the glass walls of the tube.
Retrieved from "https://en.wiktionary.org/w/index.php?title=derma_ray&oldid=36281342"