billion dollar question

A form of billion-dollar question — Synonym of million-dollar question.

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Meanings

nounbillion dollar question (plural billion dollar questions)

plural billion dollar questions

  1. alternativeAlternative form of billion-dollar question.
Cite this entry
APA

billion dollar question. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/billion%20dollar%20question

MLA

“billion dollar question.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/billion%20dollar%20question. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “billion dollar question,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/billion%20dollar%20question.

Source: billion dollar question on Wiktionary, CC BY-SA 4.0.