1. (noun) a very large indefinite number (usually hyperbole)

• billion
• gazillion
• jillion
• million
• zillion

2. (noun) the number that is represented as a one followed by 18 zeros

• one million million million

3. (noun) the number that is represented as a one followed by 12 zeros

• 1000000000000
• one million million

1. (adjective) one quintillion in Great Britain

• cardinal

2. (adjective) one million million in the United States

• cardinal

1. (noun) a very large indefinite number (usually hyperbole)

• large indefinite amount
• large indefinite quantity

2. (noun) the number that is represented as a one followed by 18 zeros

• large integer

3. (noun) the number that is represented as a one followed by 12 zeros

• large integer