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trillion

/ˈtrɪljən/

A thousand billion; an extremely large number

From French, ultimately an Indo-European numeral element tri (three).

noun
adjective
determiner
tri
French
Verified
tri-
Prefix meaning “three”; the numerical component of trillion

from French trillion

+1 more source
-illion
Italian
Verified
-lione
Numerical-forming element in trilione, modeled on milione “million”

from Italian trilione ; see tri- + million . In the U.S., the fourth power of a thousand (one thousand billion, 1...

illion
French
Verified
-illion
Suffix-like numerical element in trillion, equivalent to tri- + -illion

from French trillion

+1 more source
Combined
French trillion
The prefix tri- combines with the -illion numerical element; the form was borrowed into English.
English
Verified
trillion
Attested from the 1680s; originally often meant 10¹⁸ on the long scale

from French trillion

+1 more source
Modern English
Verified
trillion
Usually means 10¹², one million million, in both American and British English

from French trillion

+1 more source
Modern English
trillion

Numbers became linguistic architecture in Renaissance Europe: once million existed, speakers began stacking familiar pieces onto it, producing forms such as Italian trilione and French trillion. The “tri-” does not mean three ordinary objects; it points to a third power in the old naming system, which helped create the original long-scale sense of 10¹⁸—one million million million. English adopted the word in the 1680s, but then the Atlantic divide made the number itself slippery: American usage settled on 10¹², while Britain historically used 10¹⁸ before largely adopting the American meaning. The suffix also escaped serious arithmetic and became comic raw material: zillion, first recorded in 1916, means merely “an enormous unspecified number.” And in basketball, Harvey Pollack popularized “a trillion” as a joke for a player whose box-score line looked like a one followed by thirteen zeros—proof that even a gigantic number can describe statistical nothingness.

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