音标：[.ʌltrә'vaiәlit] ；柯林斯词典等级：1 级；

a. 紫外线的
[化] 紫外线的; 紫外线

n. radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
s. having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end

词型变化：名词复数形式 : ultraviolets
考试类型：[六级/考研/托福/IELTS]

词性分布：

形容词100%

ultraviolet的用法和样例：

例句

用作形容词(adj.)

The ozone layer shields the earth from the sun's ultraviolet rays.臭氧层保护地球不受太阳紫外线的辐射。
A suncream provides adequate protection against harmful ultraviolet rays.使用防晒霜可以保护皮肤不受紫外线的伤害。

用作名词(n.)

Ultraviolet rays can penetrate through clouds.紫外线可以穿透云层。
What are infrared and ultraviolet rays?什么是红外线和紫外线？

常见句型

用作形容词(adj.)

用作定语～+ n.

The ozone layer surrounding the earth protects our skin from being hurt by the ultraviolet rays.环绕地球的臭氧层保护着我们的皮肤免受紫外线的伤害。

词汇搭配

ultraviolet region紫外区,紫外线区域...
ultraviolet spectrometer紫外线光谱仪,紫外分...
ultraviolet microscope紫外光显微镜,紫外显...
ultraviolet recorder紫外线记录仪...
ultraviolet monitor紫外监测器
ultraviolet laser紫外线激光器...
ultraviolet detector紫外光检测器...
ultraviolet light紫外线
ultraviolet rays紫外线
ultraviolet lamp紫外线灯
ultraviolet spectrometry紫外分光术,紫外分光...
ultraviolet band紫外区,紫外波段...
ultraviolet irradiation紫外线照射
ultraviolet photography紫外线照相
ultraviolet astronomy紫外天文学
ultraviolet filter紫外线滤光器...
ultraviolet spectroscopy紫外光谱学,紫外线光...
ultraviolet absorption紫外线吸收
ultraviolet absorber紫外线吸收体...
ultraviolet radiation紫外线

经典引文

They talk about these ultra-violet rays. Plain sunshine used to be good enough.
出自：J. Galsworthy

【近义词】

infrared红外线的
electromagnetic电磁的
X-rayX射线
ultraviolet light紫外线
ultraviolet radiation紫外线
UV紫外线(=ultravi...

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学英语单词

a. infraorbitalis

accesssory equipment of fan

burden of adducing evidence

cell nucleus