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English definition of “ray”


noun [C] (BEAM)    /reɪ/
B2 a narrow beam of light , heat , etc. travelling in a straight line from its place of origin : A ray of sunshine shone through a gap in the clouds . Light rays bend as they pass from air to water .Quantities and units of light
(Definition of ray noun (BEAM) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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