noun
billionaire
bihl-ee-uh-NEH-uh
noun
1
A person whose net worth is a billion or more in some currency.
"The tech founder became a billionaire before turning thirty."
How to Use Billionaire
Learner’s notesIn plain EnglishSomeone extremely wealthy, worth at least a billion dollars (or another currency).
Common pairings
self-made billionaire
tech billionaire
Word Forms
billionaires plural
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The tech founder became a _____ before turning thirty.
Etymology
Formed from billion plus the suffix -aire, modeled on millionaire.