Where does “femtobecquerel” come from?

femtobecquerel (English) comes from English femto-, from Danish femten, from Old Norse fimmtán, from Proto-Germanic fimftehun, from Proto-Germanic tehun, from Proto-Indo-European déḱm̥t — ten.

femtobecquerel (English): An SI unit of radioactive activity equal to 10−15...

Definitions

  1. An SI unit of radioactive activity equal to 10−15...

Ancestry of “femtobecquerel”, step by step

StepLanguageWordMeaning
1Englishfemto-API; In the International System of Units and...
2Danishfemtenfifteen
3Old Norsefimmtánfifteen
4Proto-Germanicfimftehunfifteen
5Proto-Germanictehunten
6Proto-Indo-Europeandéḱm̥tten
Every word from Proto-Indo-European déḱm̥t →Every word from Proto-Germanic tehun →Every word from Proto-Germanic fimftehun →