n.

1. 【英】百萬兆，一百萬的三次冪
2. 【美】萬億，兆，一千的四次冪
3. （常複數）無數

a.

1. 【英】百萬兆的，一百萬的三次冪的
2. 【美】萬億的，兆的，一千的四次冪的

cardinal number

1. a million million (1,000,000,000,000 or 10¹²).
   ▸Brit. dated a million million million (1,000,000,000,000,000,000 or 10¹⁸).
2. (trillions) informal a very large number or amount.