1. a factor or feature that distinguishes one thing from another; something that makes a product, service, or person stand out from competitors or alternatives
Usage: commonly used in business and marketing contexts
2. in mathematics and calculus, a device or function that computes or represents a derivative
Usage: technical; used in mathematics and engineering

Examples

• The company's innovative design is a key differentiator in a crowded market.
• Fast customer service is the main differentiator between this brand and its competitors.
• Quality and reliability are important differentiators for luxury car manufacturers.
• In calculus, a differentiator helps us find the rate of change of a function.
• What differentiator will help your startup succeed against established companies?