decabillionaire

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noun

A person whose wealth is greater than ten billion (10¹⁰) dollars, or other currency.

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Meanings

noundecabillionaire (plural decabillionaires)

plural decabillionaires

  1. rareA person whose wealth is greater than ten billion (10¹⁰) dollars, or other currency.

Origin

From deca- (“ten”) + billionaire.

Full word history & related roots →
Cite this entry
APA

decabillionaire. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/decabillionaire

MLA

“decabillionaire.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/decabillionaire. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “decabillionaire,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/decabillionaire.

Source: decabillionaire on Wiktionary, CC BY-SA 4.0.