Where does “diarism” come from?

diarism (English) comes from English diary, from Latin diarius, from Latin dies, from Latin diem, from Proto-Italic djēm, from Proto-Italic *djous, from Proto-Indo-European dyḗws, from Proto-Indo-European dyéws — to be bright; sky, heaven.

diarism (English): The practice of writing a diary

Definitions

  1. The practice of writing a diary

Ancestry of “diarism”, step by step

diarism traces back through two separate lines of ancestry.

via English diary

StepLanguageWordMeaning
1EnglishdiaryA daily log of experiences, especially those of...
2Latindiarius
3LatindiesA day, "particularly:"
4Latindiemaccusative singular of diēs
5Proto-Italicdjēmaccusative singular of *djous
6Proto-Italic*djous
7Proto-Indo-Europeandyḗwssky, heaven; sky god
8Proto-Indo-Europeandyéwssky, heaven
9Proto-Indo-Europeandyew-to be bright; sky, heaven

via English ism

StepLanguageWordMeaning
1EnglishismAn ideology, system of thought, or practice that...
2English-ismUsed to form nouns of action or process or result...
3Latin-ismus-ism
4Ancient Greek-ισμόςForms abstract nouns
5Ancient Greek-μόςForms abstract nouns
6Proto-Indo-European-mósCreates action/result nouns from verb stems
Every word from Proto-Indo-European dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws