Where does “tera-” come from?

tera- (Portuguese) comes from Ancient Greek τέρας, from Proto-Indo-European kʷer- — to do; to make; to build.

tera- (Portuguese): tera- SI prefix indicating 1012, a trillion

Definitions

  1. tera- SI prefix indicating 1012, a trillion

Ancestry of “tera-”, step by step

StepLanguageWordMeaning
1Ancient Greekτέραςsign, marvel, wonder; divine sign, omen, portent;...
2Proto-Indo-Europeankʷer-to do; to make; to build
Every word from Proto-Indo-European kʷer- →Every word from Ancient Greek τέρας →
tera- — Etymology, Origin & Word History | Etymology Explorer