Where does “retinopapillitis” come from?

retinopapillitis (English) comes from English papillitis, from English papilla, from Latin papilla, from Latin -lus, from Proto-Italic -elos, from Proto-Indo-European -e-lós, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

retinopapillitis (English): inflammation of the retina and the optic papilla, usually as a part of optic neuritis; depending on nosology approach, viewed as synonymous with, hyponymous to, or differentiable from any of the following: papillitis, retinal papillitis, optic papillitis, optic neuritis, and papilledema

Definitions

  1. inflammation of the retina and the optic papilla, usually as a part of optic neuritis; depending on nosology approach, viewed as synonymous with, hyponymous to, or differentiable from any of the following: papillitis, retinal papillitis, optic papillitis, optic neuritis, and papilledema

Ancestry of “retinopapillitis”, step by step

StepLanguageWordMeaning
1Englishpapillitisinflammation of the optic nerve head
2EnglishpapillaA nipple-like anatomical structure
3Latinpapillanipple, teat, breast, papilla
4Latin-lusAlternative form of -ulus; diminutive suffix
5Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
6Proto-Indo-European-e-lós
7Proto-Indo-European-lósForms agent nouns from verbal roots
Every word from Proto-Indo-European -lósEvery word from Latin -lusEvery word from Latin papilla