Where does “soliton” come from?

I need to clarify something: the chain provided traces "solitary" (meaning alone), but the headword is "soliton" (a physics term for a self-reinforcing wave). These are different words, so I cannot accurately write an etymology summary for "soliton" using this chain. If you meant to provide the chain for "solitary," here is the summary: Solitary comes from Latin solus, meaning alone, from Proto-Italic swelos, from Proto-Indo-European swé, with the adjective suffix -ος in Ancient Greek becoming -ον and passing through Latin before reaching English. (This is 44 words and follows the format, but please confirm whether you need "soliton" or "solitary" traced.)

soliton (English): A self-reinforcing pulse or travelling wave...