1. the number represented by 1 followed by 30 zeros in the U.S. system
Usage: mathematics
2. the number represented by 1 followed by 54 zeros in the British system
Usage: mathematics; British

Examples

• A nonillion is an incredibly large number that’s difficult to comprehend.
• The national debt reached several nonillion atoms if we counted every particle.
• In American notation, a nonillion has 30 zeros after the 1.
• The British nonillion is much larger than the American version.
• Scientists rarely need to use numbers as large as a nonillion.
• One nonillion seconds would span an unimaginably long period of time.