ultraviolet radiation ult·ra·vio·letradiation uncommon noun 1. radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays Synonymsultravioletultraviolet radiationultraviolet lightultraviolet illuminationUV Related words Broader terms actinic radiation Narrower terms sunray WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
