centillion
/sɛnˈtɪljən/
noun
- The number 1 followed by 303 zeros (in the American system) or 1 followed by 600 zeros (in the British system); an extremely large, almost unimaginable number.
- He joked that he would need a centillion dollars to buy everything on his wish list.
- The number of atoms in the universe is far less than a centillion.
- Mathematicians sometimes use the word centillion to describe a quantity beyond everyday comprehension.