Where does “sero” come from?

sero (Esperanto) comes from German Schäre, from Middle English skaren, from Old Norse sker, from Proto-Germanic skarją, from Proto-Indo-European (s)ḱer- — dung, manure, filth; manure, dung, filth.

sero (Esperanto): serum

Definitions

  1. serum

Ancestry of “sero”, step by step

sero traces back through two separate lines of ancestry.

via German Schäre

StepLanguageWordMeaning
1GermanSchäreskerry flat, rocky isle, especially in Scandinavia
2Middle Englishskaren—
3Old Norseskerrock in the sea, skerry; inflection of skera: ##...
4Proto-Germanicskarją—
5Proto-Indo-European(s)ḱer-dung, manure, filth; manure, dung, filth

via Latin Serum

StepLanguageWordMeaning
1LatinSerumwhey
2Proto-Indo-Europeansēr-to flow
3Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together
Every word from Proto-Indo-European (s)ḱer- →Every word from Proto-Germanic skarją →Every word from Old Norse sker →
sero — Etymology, Origin & Word History | Etymology Explorer