grenz ray

From Wiktionary, the free dictionary
Archived revision by Equinox (talk | contribs) as of 15:03, 30 December 2018.
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

English

[edit]
English Wikipedia has an article on:
Wikipedia

Etymology

[edit]

German Grenz (border) (since the effects were thought to be on the border between ultraviolet light and traditional X-rays) + ray

Noun

[edit]

grenz ray (plural grenz rays)

  1. An ultrasoft X-ray used in treating various skin diseases.