Where does “perpendicularly” come from?
Perpendicularly derives from English perpendicular, from Middle French perpendiculaire, from Latin perpendiculum, combining Latin per- and -culum with Proto-Indo-European per- and ḱóm.
perpendicularly (English): In a perpendicular manner
Definitions
- In a perpendicular manner
Ancestry of “perpendicularly”, step by step
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | perpendicular | at or forming a right angle; Exactly upright;... |
| 2 | Middle French | perpendiculaire | — |
| 3 | Old French | perpendiculer | — |
| 4 | Latin | perpendiculum | plumbline, plummet |
| 5 | Latin | -culum | nominative neuter singular of -culus; accusative... |
| 6 | Proto-Italic | -klom | — |
| 7 | Proto-Indo-European | -tlom | Alternative form of *-trom |
| 8 | Proto-Indo-European | -trom | Forms nouns denoting a tool or instrument |
| 9 | Proto-Indo-European | -tḗr | Derives agent nouns from verbs, denoting someone... |