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

make believe

believing or imagining things that appear to be attractive or exciting, but are not real

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

showrooming noun

February 23, 2015
the activity of examining a product in a physical store and then making the purchase with an online retailer Amazon’s new smartphone is specifically designed to make showrooming fast and easy.

Read More