quindecillion

From Latin quīndecim (“fifteen”) +‎ -illion or quin- +‎ decillion.

• IPA^(key): /ˌkwɪndəˈsɪl.i.ən/

  Rhymes: -ɪljən

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quindecillion (plural quindecillions)

1. (rare, US, modern British and Australia short scale) 10⁴⁸.
   • 1946: United States Department of Commerce, The United States Department of Commerce: How it serves you on land and sea and in the air, U. S. Government Printing Office (1946)

     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 [...].

   • 1978, D. Wallechinsky, I. Wallace, A. Wallace, The People's Almanac Presents The Book of Lists, Bantam:

     One supernova, in 1054, was thought by many to herald the biblical Day of Judgment. We have reached an energy level of 10 quindecillion ergs, or 10⁴⁹ ergs.

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

• (10⁴⁸): a long scale octillion
• (10⁹⁰): a short scale novemvigintillion

• (short and long scale) Previous: quattuordecillion. Next: sexdecillion.