Meanings
nounoilionaire (plural oilionaires)
plural oilionaires
- USinformalOne who has made a large amount of money in the oil business.
Origin
Blend of oil + millionaire.
Full word history & related roots →Cite this entry
APA
oilionaire. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/oilionaire
MLA
“oilionaire.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/oilionaire. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “oilionaire,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/oilionaire.
Source: oilionaire on Wiktionary, CC BY-SA 4.0.