LATIN DICTIONARYLexicon Latīnum
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“radiate” in Latin

The English word radiate itself goes back to Latin radius, through radiātus.

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

radiate
radiare (to cast rays: in the sense of “glitter” it does not belong to classical prose): radios spargere; relucere; refulgere.

Quick answer

What is the Latin word for radiate?
The usual Latin words for “radiate” are radiō, relūceō, refulgeō. 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.