Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun ultraviolet

1 sense of ultraviolet

Sense 1
ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV -- (radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays)
       => actinic radiation, actinic ray -- (electromagnetic radiation that can produce photochemical reactions)

Antonyms of adj ultraviolet

1 sense of ultraviolet

Sense 1
ultraviolet -- (having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end; "ultraviolet radiation"; "an ultraviolet lamp")

INDIRECT (VIA invisible) -> visible, seeable -- (capable of being seen; or open to easy view; "a visible object"; "visible stars"; "mountains visible in the distance"; "a visible change of expression"; "visible files")

Similarity of adj ultraviolet

1 sense of ultraviolet

Sense 1
ultraviolet -- (having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end; "ultraviolet radiation"; "an ultraviolet lamp")
       => invisible (vs. visible), unseeable -- (impossible or nearly impossible to see; imperceptible by the eye; "the invisible man"; "invisible rays"; "an invisible hinge"; "invisible mending")