Where does “petawatt” come from?

petawatt (English) comes from English peta-, from English penta-, from Ancient Greek πεντα-, from Ancient Greek πέντε, from Proto-Hellenic pénkʷe, from Proto-Indo-European pénkʷe — five.

petawatt (English): An SI unit of power equal to 1015 watts. Symbol:...

Definitions

  1. An SI unit of power equal to 1015 watts. Symbol:...

Ancestry of “petawatt”, step by step

StepLanguageWordMeaning
1Englishpeta-API; In the International System of Units and...
2Englishpenta-API; five
3Ancient Greekπεντα-penta-, five; five
4Ancient Greekπέντεfive
5Proto-Hellenicpénkʷefive
6Proto-Indo-Europeanpénkʷefive
Every word from Proto-Indo-European pénkʷe →Every word from English penta- →Every word from Ancient Greek πεντα- →