tredecillion
noun
tre·de·cil·lion ˌtrē-di-ˈsil-yən 
often attributive
US : a number equal to 1 followed by 42 zeros see Table of Numbers
also, British : a number equal to 1 followed by 78 zeros see Table of Numbers
Word History
Etymology
Latin tredecim thirteen (from tres three + decem ten) + English -illion (as in million) — more at three, ten
First Known Use
1850, in the meaning defined above
- invigilate
- invigilated
- invigilates
- invigilating
- invigilation
- invigilations
- invigilator
- invigilators
- invigor
- invigorants
- invigorate
- invigorated
- invigorates
- invigorating
- invigoratingly
- invigoration
- invigorations
- invigorator
- invigorators
- invigour
- invinate
- invination
- invincibilities
- invincibility
- invincible