Where does “attowatt” come from?

attowatt (English) comes from English atto-, from Danish atten, from Old Norse áttján, from Proto-Germanic ahtōutehun, from Proto-Germanic ahtōu, from Proto-Indo-European oḱtṓw, from Proto-Indo-European aḱ- — sharp, pointed; sharp, pointed, edgy; sharp,...

attowatt (English): An SI unit of power equal to 10−18 watts. Symbol:...

Definitions

  1. An SI unit of power equal to 10−18 watts. Symbol:...

Ancestry of “attowatt”, step by step

StepLanguageWordMeaning
1Englishatto-API; In the International System of Units and...
2Danishatteneighteen
3Old Norseáttjáneighteen
4Proto-Germanicahtōutehuneighteen
5Proto-Germanicahtōueight
6Proto-Indo-Europeanoḱtṓweight
7Proto-Indo-Europeanaḱ-sharp, pointed; sharp, pointed, edgy; sharp,...
Every word from Proto-Indo-European aḱ- →Every word from Proto-Indo-European oḱtṓw →Every word from Proto-Germanic ahtōu →
attowatt — Etymology, Origin & Word History | Etymology Explorer