Where does “nonplantigrade” come from?

nonplantigrade (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.

nonplantigrade (English): Not plantigrade; A nonplantigrade animal

Definitions

  1. Not plantigrade; A nonplantigrade animal

Ancestry of “nonplantigrade”, step by step

nonplantigrade 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 plantigrade

StepLanguageWordMeaning
1EnglishplantigradeOf an animal: walking with the entire sole of the...
2Frenchplantigradeplantigrade
3Latinplantaany vegetable production that serves to propagate...
4Proto-Italicplāntā
5Proto-Indo-Europeanpléh₂-n̥t-eh₂
6Proto-Indo-Europeanpleh₂-flat
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn