English Reference

Word

trillion

Phoneticstril·lion

US/ˈtɹɪɫjən/

UK/tɹˈɪliən/

Definitions

01the number 1,000,000,000,000

B2 · Math

num. the number 1,000,000,000,000, which is a million million.

num. the cardinal number 10 to the power of 12, following the short scale convention now standard in both British and American English.

“The government spent over a trillion dollars on the new infrastructure project last year.”

“Economists warned that the national debt had surpassed thirty trillion dollars, sparking intense debate over long-term fiscal sustainability.”

Usage

Used as a cardinal number; it remains singular when preceded by a specific number but takes an 's' in the phrase 'trillions of'.

02an incredibly large amount

B2

n. a word you use when you want to say there is a huge, uncountable number of something.

n. a hyperbolic term used to denote an unspecified, extremely large quantity.

“I have a trillion things to do before we leave for our holiday tomorrow.”

“She felt as though she had a trillion different thoughts racing through her mind as she waited for the interview to begin.”

Informal

Teaching tip

This is purely hyperbolic; learners should use it only in casual speech to show exaggeration.

Synonyms

zilliongazillionbillions

03basketball slang

C2 · Sport

n. a joke in basketball for a player who plays for a few minutes but does nothing else on the stat sheet.

n. a box score entry where a player records minutes played followed by zeros in all other statistical categories, resembling the digit one followed by twelve zeros.

“He played for two minutes but finished with a trillion in the box score.”

“The benchwarmer's only contribution to the game was a five-minute trillion, failing to record a single point, rebound, or assist before being subbed out.”

Slang · American English

Real-World Examples

“Goldman Sachs projects it to grow to half a trillion dollars within the next few years.”
Phys.org · 19 Aug 2026

Etymology

Borrowed from French trillion, from French tri- (“three”) + -illion, equivalent to tri- + -illion. The noun was coined by American basketball player Harvey Pollack, because of the way the numbers read across a basketball box score.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

Scan code

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