The branch of physics that deals with the properties and phenomena of light; optics.
Early 19th century; earliest use found in Noah Webster (1758–1843), lexicographer. From photo- + -logy.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。