The story
- Latin · derived fromperpendiculum“plumb line”
- Old French · derived fromperpendiculer
- Middle French · derived fromperpendiculaire
- English todayperpendicular
Derived from Middle French perpendiculaire, from Old French perpendiculer, from Latin perpendiculum (“plumb line”).
Words from the same roots
Latinperpendiculum all →
perpendicle
Etymology from Wiktionary, CC BY-SA 4.0.