Where does “nonsilicious” come from?

nonsilicious (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.

Ancestry of “nonsilicious”, step by step

nonsilicious 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 silicious

StepLanguageWordMeaning
1EnglishsiliciousAlternative spelling of siliceous
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn