noun
Meaning 1
An ultrasoft X-ray used in treating various skin diseases.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Phrase guide
grenz ray
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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No pronunciation record was provided for this word.
History
Etymology
From German Grenz (“border”) (since the effects were thought to be on the border between ultraviolet light and traditional X-rays) + ray.