Vertical
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 05:29的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=vertical+etymology&newwindow=1&hl=en ref] mid 16th century (in the sense ‘directly over…”的新页面）
mid 16th century (in the sense ‘directly overhead’): from French, or from late Latin verticalis, from vertex (see vertex).
wiktionary
Borrowed from Middle French vertical, from Late Latin verticālis.
etymonline
vertical (adj.)
1550s, "of or at the vertex, directly overhead," from French vertical (1540s), from Late Latin verticalis "overhead," from Latin vertex (genitive verticis) "highest point" (see vertex). Meaning "straight up and down" is first recorded 1704. As a noun meaning "the vertical position or line" from 1834. Related: Vertically.
