Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “ray”

See all translations

ray

noun [C]  /reɪ/ us  

ray noun [C] (BEAM)

physics a narrow beam of light, heat, or energy

ray noun [C] (LINE)

geometry half of a line

ray noun [C] (AMOUNT)

a slight amount or signal of something good: One couple seems interested in buying our house, which is a ray of hope after all these months.
Translations of “ray”
in Korean 광선…
in Arabic شُعاع…
in French rayon, lueur…
in Turkish ışın, şua…
in Italian raggio…
in Chinese (Traditional) 光束, 光線,光束, (熱能等的)輻射線…
in Russian луч…
in Polish promień…
in Spanish rayo, brizna, resquicio…
in Portuguese raio…
in German der Strahl…
in Catalan raig…
in Japanese 光線, 熱線, (放射エネルギーの)線…
in Chinese (Simplified) 光束, 光线,光束, (热能等的)辐射线…
(Definition of ray from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of ray?
Add Cambridge dictionaries to your browser to your website

Definitions of “ray” in other dictionaries

Word of the Day

glacial

made or left by a glacier

Word of the Day

Let’s celebrate! (words and phrases for parties)

by Kate Woodford,
December 17, 2014
​​​ With Christmas and New Year almost upon us, we thought it a good time to look at the language of parties and celebrations. First, let’s start with the word ‘party’ itself. To have or throw a party or, less commonly, to give a party is to arrange a party: We’re having a

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More