When did you become aware of the term $1 Trillion? Five years ago? Ten years ago?
The word trillion comes from the French tri- (three) and -illion (from million). Jehan Adam first coin the word in 1475 as trimillion and this was later adjusted in 1484 by Nicolas Choquet to tryllion.
But how much is a trillion. Let me put it in context. If you take $1,000 bills and build a single stack you get the following results:
A $1 Million stack of $1,000 bills would measure 4 inches high.
A $1 Billion stack would measure 358 feet tall.
A $1 Trillion stack would stand 67.9 Miles high.
Now think about the national debt being $11 Trillion and climbing.