OpenEtymology

trillion

UKˈtrɪljənUSˈtrɪljən

Meaning

1n

the number 1,000,000,000,000; one million million

2n

(informal, chiefly british) a very large number or amount

Structure

word structure
1
tri
three
+
2
llion
large number suffix

Usage

the national debt is measured in trillions of dollars.

she said she had a trillion things to do before the party.

a trillion stars shone in the clear night sky.

Etymology

The word 'trillion' entered English from French in the late 17th century. Its core component is the Latin prefix 'tri-', meaning 'three', which indicates its position in the historical system of numeration where each new '-illion' term represented a million raised to a successive power. The '-illion' suffix evolved via French from the Italian augmentative '-ilione', related to 'milione' (million). Thus, the literal construction signifies the third power of a million (1,000,000^3), a logical extension from 'million' and 'billion'. While the precise numerical value has shifted in modern usage, especially between long and short scale systems, the etymological link to the concept of 'three' and immense magnitude remains clear.

Analysis

Structure
tri (three) + llion (large number suffix)=trithree+llionlarge number suffix

tri is from latin and greek, meaning 'three'. llion is an altered english suffix from french '-illion', itself from italian '-ilione', a augmentative suffix used in forming large number names.

Trillion Meaning & Word Parts (tri + llion) | OpenEtymology