Main Entry: tril·lion

Pronunciation: \ˈtri(l)-yən\

Function: noun

Etymology: French, from tri- + -illion (as in million)

Date: 1690

1 — see number table
2 : an indeterminately large number <a trillion mosquitoes out tonight>

— trillion adjective

— tril·lionth \-yən(t)th\ adjective or noun