qua‧dril‧lion /kwɒˈdrɪljən $ kwɑː-/
number[
Date: 1600-1700;
Origin: quadr- + -illion (as in million)]
1. the number one followed by 15 zeros
2. British English old use the number one followed by 24 zeros
[TahlilGaran] Dictionary of Contemporary English ▲