Where does “subtree” come from?
Subtree comes from English sub combined with tree, which derives from Latin sub and Proto-Italic supo, ultimately from Proto-Indo-European upo and dóru meaning wood or tree.
subtree (English): A tree wholly contained in another
Definitions
- A tree wholly contained in another
Ancestry of “subtree”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | English | sub- | under, beneath; subsidiary, secondary; almost,... |
| 2 | Latin | sub- | sub- |
| 3 | Proto-Indo-European | upó | under, below |
| 4 | Proto-Indo-European | h₃ewp- | — |