滤光镜 lǜguāngjìng optical filter Origin Definitions Defs Strokes Stroke Words Sentences Sents 滤 濾 lǜ verb to filter to strain or filter; to remove impurities by passing a liquid or gas through a device or material光 guāng noun light light; ray; beam of light镜 鏡 jìng nounverb lens (bound form) lens; an optical tool used to correct vision, take photographs, or perform experiments