Definition of "quindecillion" in English

numeral

1. (rare, US, modern British and Australia short scale) 10⁴⁸.

   • 3 quindecillion, 657 quattuordecillion, 262 tredecillion; which is to say the figures 3,657,262 followed by 42 ciphers. Operators of the key punch machines transfer a code symbol from the Census ….

2. (rare, dated, British and Australia, long scale) 10⁹⁰.