1. at a rate that becomes progressively faster; increasing rapidly and continuously
Usage: often used informally to mean ‘very rapidly’ even when not mathematically exponential
2. in a manner involving mathematical exponents or exponential functions
Usage: mathematical; technical

Examples

• The company’s profits grew exponentially over the past five years.
• Social media usage has increased exponentially among teenagers.
• The population of the city expanded exponentially after the tech boom.
• Her stress levels rose exponentially as the deadline approached.
• The function grows exponentially as x increases.
• Computing power has improved exponentially since the 1970s.
• The virus spread exponentially through the community.