We found 3 dictionaries that define the word one billion:

General (2 matching dictionaries)

1. one-billion: Wordnik
2. One billion: Wikipedia, the Free Encyclopedia

Slang (1 matching dictionary)

3. one billion: Urban Dictionary

Phrases: One Billion Americans, country of over one billion, one billion has nine of them, more... ▸ Words similar to one billion ▸ Usage examples for one billion ▸ Idioms related to one billion ▸ Wikipedia articles (New!) ▸ Words that often appear near one billion ▸ Rhymes of one billion ▸ Invented words related to one billion