millions; vast fortune
Refers to an enormous amount of money, often in the millions or a huge fortune. Somewhat literary or emphatic; not an everyday word for large sums.
He amassed a vast fortune.
その事業には巨億の資金が必要だ。
That project requires millions in funding.
Compound of 巨 (huge) and 億 (hundred million), literally 'huge hundred-millions', emphasizing an extremely large amount of money.