Optical
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 08:46的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=optical+etymology&newwindow=1&hl=en ref] late Middle English: from French optique or medi…”的新页面）
late Middle English: from French optique or medieval Latin opticus, from Greek optikos, from optos ‘seen’.
wiktionary
optic + -al
etymonline
optical (adj.)
1560s, "relating to or connected with the science of optics; pertaining to vision," from optic + -al (1). Of abstract art, from 1964. In astronomy, in reference to double stars that appear so only because they lie in the same line of sight from earth, by 1868. Optical illusion is attested by 1757. Related: Optically.
