Etymology Explorer › English

Where does “atto-” come from?

atto- (English) comes 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,...

atto- (English): API; In the International System of Units and...

Definitions

  1. API; In the International System of Units and...

Ancestry of “atto-”, step by step

StepLanguageWordMeaning
1Danishatteneighteen
2Old Norseáttjáneighteen
3Proto-Germanicahtōutehuneighteen
4Proto-Germanicahtōueight
5Proto-Indo-Europeanoḱtṓweight
6Proto-Indo-Europeanaḱ-sharp, pointed; sharp, pointed, edgy; sharp,...

Words derived from “atto-”

  • attosecond
  • attomole
  • attomolar
  • attogram
  • attoliter
  • attojoule
  • attopulse
  • attohertz
  • attoreactor
  • attowatt
  • attolitre
  • attophysics
  • attoclock
  • attometre
  • attoparsec
  • attoampere
  • attokatal
Every word from Proto-Indo-European aḱ- →