LATIN DICTIONARYLexicon Latīnum
English → Latin

“ray” in Latin

The English word ray itself goes back to Latin radius.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

ray
A beam of light, radius luminis: lumen: lux [SYN. in LIGHT]: a ray of hope beamed forth, lux quaedam videbatur oblata (Cic.); lux venisse quaedam et spes videbatur (ib.); lux quaedam affulsisse (civitati) visa est (Liv.).
A kind of fish, raia (Plin.).

Quick answer

What is the Latin word for ray?
The usual Latin words for “ray” are lūmen, lūx, raia; also cīvitās. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.