Where does “roseolous” come from?

roseolous (English) comes from English ous, from English ou, from Afrikaans ou, from Dutch oud, from Middle Dutch out, from Old Dutch ald, from Proto-West Germanic ald, from Proto-Germanic aldaz — to grow, nourish.

roseolous (English): Of or pertaining to a roseola

Definitions

  1. Of or pertaining to a roseola

Ancestry of “roseolous”, step by step

roseolous traces back through two separate lines of ancestry.

via English ous

StepLanguageWordMeaning
1Englishousplural of ou
2EnglishouA probably extinct species of Hawaiian...
3AfrikaansouAn old fellow, guy, bloke; attributive form of...
4Dutchoudold
5Middle Dutchoutold
6Old Dutchald
7Proto-West Germanicaldold
8Proto-Germanicaldazold, grown up
9Proto-Indo-Europeanh₂eltós
10Proto-Indo-Europeanh₂él-to grow, nourish

via English roseola

StepLanguageWordMeaning
1EnglishroseolaA rosy rash occurring in measles, typhoid fever,...
2LatinRosarose
3Ancient Greekῥόδονrose (usually Rosa gallica)
4Old Persianwurdiflower
5Proto-Germanicwurdizfate, destiny
6Proto-Indo-Europeanwrti-
7Proto-Indo-Europeanwert-to turn, to rotate
8Proto-Indo-Europeanwer-to burn; to cover, heed, notice; squirrel
Every word from Proto-Indo-European h₂él-Every word from Proto-Indo-European h₂eltósEvery word from Proto-Germanic aldaz