EnglishEdit
EtymologyEdit
From Latin tredecim (“thirteen”) + illion.
PronunciationEdit

 Rhymes: ɪljən
Cardinal numeralEdit
tredecillion
 (rare, US, modern British & Australian, short scale) 10^{42}.
 1896: Frank H. Hall, The Werner Arithmetic, Oral and Written, Book Two, Parts I and II
 The names of the periods above trillion are as follows [...] 15th, tredecillion [...]
 1946 CE: 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 [...].
 1994 CE: National Council of Teachers of Mathematics, The Arithmetic Teacher, National Council of Teachers of Mathematics (1994)
 The answer is read as: 13 sexdecillion, 253 quindecillion, 796 quattuordecillion, 742 tredecillion, [...].
 1896: Frank H. Hall, The Werner Arithmetic, Oral and Written, Book Two, Parts I and II
 (rare, dated, UK, Australia, long scale) 10^{78}.
SynonymsEdit
 10^{42}: a long scale septillion
TranslationsEdit
10^{42}


10^{78}

See alsoEdit
 (short and long scale) Previous: duodecillion. Next: quattuordecillion.
ReferencesEdit
 Words of Mathematics: An Etymological Dictionary of Mathematical Terms Used in English (1994).