tredecillion

Numeral

tredecillion (plural tredecillions)

1. (US, rare, modern British & Australian, short scale) 10⁴².
   • The names of the periods above trillion are as follows [...] 15th, tredecillion [...]1896, Frank H. Hall, The Werner Arithmetic, Oral and Written, Book Two, Parts I and II
   • 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 [...].1946, United States Department of Commerce, The United States Department of Commerce: How it serves you on land and sea and in the air

   Synonyms:

   1042

2. (Australia, UK, dated, rare, long scale) 10⁷⁸.

   Synonyms:

   1078