1. multiplied by a million; a million times as great or as much

1. by a million times; to a million times the degree

Examples

• The company’s profits increased millionfold after the new product launch.
• Her investment grew millionfold over the decades.
• The population of bacteria multiplied millionfold in the petri dish.
• Computing power has expanded millionfold since the 1970s.
• The star’s brightness increased millionfold during the supernova.
• Data storage capacity has grown millionfold in recent years.