noun, plural billions (as after a numeral) billion.
1. a cardinal number represented in the U.S. by 1 followed by 9 zeros, and in Great Britain by 1 followed by 12 zeros.
2. a very large number: I've told you so billions of times. adjective
3. equal in number to a billion.
This list can help you learn new vocabulary more quickly and be able explore other words more easily.