Where does “point of tangency” come from?
point of tangency (English) comes from English point, from Middle English point, from Old French point, from Latin pūnctum, from Latin punctus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.
point of tangency (English): The point where a tangent line and its curve meet
Definitions
- The point where a tangent line and its curve meet
Ancestry of “point of tangency”, step by step
point of tangency traces back through 3 separate lines of ancestry.
via English point
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | point | A discrete division of something; A sharp... |
| 2 | Middle English | point | — |
| 3 | Old French | point | a sting; a prick; moment; time; dot |
| 4 | Latin | pūnctum | point |
| 5 | Latin | punctus | pricked, punctured, pierced, having been pricked;... |
| 6 | Latin | -tus | Forms the past participle of verbs; Forms... |
| 7 | Proto-Italic | -tus | — |
| 8 | Proto-Indo-European | -tus | Derives action nouns from verb roots |
via English of
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | of | API; Expressing distance or motion; "Expressing... |
| 2 | Middle English | of | of; off; until |
| 3 | Old English | of | of, from, off, out of |
| 4 | Old English | æf | of |
| 5 | Proto-Germanic | *ab | — |
| 6 | Proto-Indo-European | apó | — |
via English tangency
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | tangency | The state of being tangent; an instance of being... |