How do you correctly spell the term for an extremely wealthy person?

অপশন (খ) Billionaire is correctly spelt term for an extremely wealthy person.

• Billionaire (noun)
English Meaning: one whose wealth is estimated at a billion or more dollars, pounds, or other monetary units.
Bangla Meaning: ধনকুবের; মহাধনাঢ্য ব্যক্তি।

Example Sentence:
- Elon Musk is a well-known billionaire, with a net worth that fluctuates based on the success of his various ventures.

Source:
1. merriam-webster.
2. Accessible Dictionary by Bangla Academy.