1. a single type of fuel used to power an engine or vehicle, as opposed to multiple fuel sources
Usage: technical; often used in aerospace and automotive contexts

Examples

• The spacecraft was designed to operate on monofuel rather than requiring multiple propellant types.
• Early rocket engines often relied on monofuel systems for simplicity and reliability.
• The vehicle's monofuel engine was optimized for efficiency with a specific type of gasoline.
• Engineers chose a monofuel approach to reduce the complexity of the fuel management system.
• Unlike multifuel engines, this monofuel design cannot switch between different fuel types.