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Word of the Day Wednesday, June 10, 2026

trillionth

/trɪˈlɪənθ/ noun · British & US
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What does trillionth mean?

noun

The ordinal number of a trillion in a sequence of numbers, being the number that is one more than a trillionth of a million.

Example

"The discovery of the trillionth of a second in particle physics was a groundbreaking achievement."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymologically related

Synonyms for trillionth

Rhymes with trillionth