Definition of billionairess
plural billionairesses
:a woman whose wealth is estimated at a billion or more dollars, pounds, or other monetary units
- Otto, by the way, had moved on from Buddhism to super-capitalism, had married a billionairess fifteen years his senior and was now a prominent figure both in Hollywood and on the Eurotrash party circuit.
- —Salman Rushdie, The Ground Beneath Her Feet, 2000
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