Denshi Jisho — Online Japanese dictionary

億 おく 10^8; 100,000,000; hundred million
Common word, Numeric 
一億 いちおく 100,000,000; one hundred million
Common word, Noun 
巨億 きょおく millions; vast fortune
Noun 
千億 せんおく 1: 100,000,000,000; hundred billion; (Obsolete term) hundred milliard (British);
2: many
Noun 
十億 じゅうおく 1,000,000,000; billion (American); (Obsolete term) milliard (British)
Common word, Noun 
百億 ひゃくおく 10,000,000,000; ten billion (American); (Obsolete term) ten milliard (British)
Common word, Noun 

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