Where does “iridosome” come from?

iridosome (English) comes from English some, from Middle English som, from Old English sum, from Proto-West Germanic *sum, from Proto-Germanic sumaz, from Proto-Indo-European sem- — together, one.

iridosome (English): A cytoplasmic organelle of iridophore cells

Definitions

  1. A cytoplasmic organelle of iridophore cells

Ancestry of “iridosome”, step by step

iridosome traces back through two separate lines of ancestry.

via English some

StepLanguageWordMeaning
1EnglishsomeA certain number, at least two; An indefinite...
2Middle Englishsomsome
3Old Englishsumsome
4Proto-West Germanic*sumsome
5Proto-Germanicsumazsome (one), a certain (one)
6Proto-Indo-Europeansem-together, one

via English irido

StepLanguageWordMeaning
1Englishirido
Every word from Proto-Indo-European sem-
iridosome — Etymology, Origin & Word History | Etymology Explorer