Where does “em” come from?

em (English) comes from English them, from Middle English þem, from Old Norse þeim, from Proto-Germanic þaimaz, from Proto-Germanic sa, from Proto-Indo-European só — this; that.

em (English): The name of the Latin-script letter M; A unit of...

Definitions

  1. The name of the Latin-script letter M; A unit of...

Ancestry of “em”, step by step

em traces back through two separate lines of ancestry.

via English them

StepLanguageWordMeaning
1EnglishthemThose ones; Him, her, or it; that one; Those
2Middle EnglishþemThird-person plural accusative pronoun: them;...
3Old Norseþeimthem, those
4Proto-Germanicþaimaz
5Proto-Germanicsathat
6Proto-Indo-Europeanthis; that

via Russian эм

StepLanguageWordMeaning
1RussianэмThe Cyrillic letter М, м; The Roman letter M, m

Words derived from “em

Every word from Proto-Indo-European
em — Etymology, Origin & Word History | Etymology Explorer