septillion

sep·til·lion  (sp-tlyn)

n.

1. The cardinal number equal to 10²⁴.

2. Chiefly British The cardinal number equal to 10⁴².

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[French : Latin septem, seven; see septet + French -illion (as in million, million, from Old French milion; see million).]

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sep·tillion adj.

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septillion [sɛpˈtɪljən]

n pl -lions, -lion

1. (Mathematics) (in Britain, France, and Germany) the number represented as one followed by 42 zeros (10⁴²)

2. (Mathematics) (in the US and Canada) the number represented as one followed by 24 zeros (10²⁴) Brit word quadrillion

[from French, from sept seven + -illion, on the model of million]

septillionth  adj & n

Thesaurus

Noun

1.

septillion - the number that is represented as a one followed by 24 zeros France, French Republic - a republic in western Europe; the largest country wholly in Europe U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776 large integer - an integer equal to or greater than ten