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English definition of “diffuser”

diffuser

noun [C] uk (also diffusor)   /dɪˈfjuː.zər/ us    /-zɚ/
a device that is used to make light less direct to spread heat across an area or surfaceLighting and light fittings in the home
(Definition of diffuser from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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