Look up trillion in Wiktionary, the free dictionary.

Trillion may mean:

Numbers

Either of the two numbers (see long and short scales for more detail):

• 1,000,000,000,000 (one million million; 10¹²; SI prefix tera) - increasingly common meaning in English language usage.
• 1,000,000,000,000,000,000 (one million million million; 10¹⁸; SI prefix exa) - increasingly rare meaning in English language usage but frequent in many other languages.

Other meanings

• One trillion (basketball), a term in basketball statistics
• Trilliant cut, sometimes called trillion, a triangular type of modified brilliant cut in gemstones

See also

• Names of large numbers
• Trillian, a similar-sounding word.

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