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Từ điển Oxford Learners Wordfinder Dictionary
ultraviolet


I - noun
radiation lying in the ultraviolet range;
wave lengths shorter than light but longer than X rays (Freq. 3)
Syn:
ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV
Hypernyms:
actinic radiation, actinic ray
Hyponyms:
sunray, sun-ray

II - adjective
having or employing wavelengths shorter than light but longer than X-rays;
lying outside the visible spectrum at its violet end (Freq. 2)
- ultraviolet radiation
- an ultraviolet lamp
Similar to:
invisible, unseeable


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