Where does “octagonal” come from?
I appreciate the task, but I need to flag an issue: the etymology chain provided traces "aldehyde" and "Aldehyd," not "octagonal." These are different words with different origins.
Octagonal (meaning "having eight sides or angles") would derive from octagon, which comes from Latin octagonus, from Greek oktágōnon (oktá- "eight" + gōnía "angle").
The chain you've provided doesn't support an etymology for "octagonal." Could you clarify whether:
1. The headword should be "aldehyde" instead, or
2. A different chain should be provided for "octagonal"?
I want to ensure the summary is accurate rather than force-fitting incompatible information.
octagonal (English): Shaped like an octagon, in having eight sides and...
Definitions
- Shaped like an octagon, in having eight sides and...
Ancestry of “octagonal”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | English | -ál | — |
| 2 | English | aldehyde | Any of a large class of reactive organic... |
| 3 | German | Aldehyd | aldehyde |
| 4 | Latin | alcohol | kohl, collyrium, stibium; any other powder... |
| 5 | Andalusian Arabic | كُحُول | — |
| 6 | Arabic | كحل | antimony; kohl, stibnite; black coloring of the... |
| 7 | Arabic | كُحْل | antimony; kohl, stibnite |
| 8 | Akkadian | guḫlum | — |
Words derived from “octagonal”