Where does “nonmediastinal” come from?

nonmediastinal (English) comes from English non, from French non, from Old French non, from Latin nōn, from Old Latin noenum, from Proto-Indo-European óynos — one; single.

nonmediastinal (English): Not mediastinal

Definitions

  1. Not mediastinal

Ancestry of “nonmediastinal”, step by step

nonmediastinal traces back through two separate lines of ancestry.

via English non

StepLanguageWordMeaning
1EnglishnonObsolete form of none
2Frenchnonno; not; a no, a negative response
3Old Frenchnonno; not; Alternative form of nom
4Latinnōnnot
5Old Latinnoenum
6Proto-Indo-Europeanóynosone; single

via English mediastinal

StepLanguageWordMeaning
1EnglishmediastinalRelating to the mediastinum
2Frenchmédiastinalmediastinal
3French-álal; appended to various words, often nouns, to make an adjective form; often added to words of Latin origin, but used with other words also
4Latin-ālis
5Proto-Italic-ālisforms relational adjectives
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn