ultraviolet
adj[usu attrib通常作定语]
1 (physics 物) (of radiation) with a wavelengththat is just beyond the violet end of the visible spectrum (指辐射)紫外的
ultraviolet rays, ie causing sun-tanning 紫外线.
2 of or using such radiation 紫外线的; 利用紫外线的
an ultraviolet lamp 紫外线灯
ultraviolet treatment, ie for skin diseases 紫外线疗法(用以治疗皮肤病). Cf 参看 infra-red (infra).