[bil-yuh-nair, bil-yuh-nair] 
| a person who has assets worth a billion or more dollars, francs, pounds, or the like. |
| bil·lion·aire (bĭl'yə-nâr', bĭl'yə-nâr') n. A person whose wealth amounts to at least a billion dollars, pounds, or the equivalent in other currency. [billion + (million)aire.] |
yəˈnɛər