1. In a manner relating to hypergolic propellants or reactions; in the way that hypergolic substances ignite spontaneously upon contact without an external ignition source.
Usage: technical; aerospace/chemistry

Examples

• The rocket fuel ignited hypergolically when the two propellants mixed in the combustion chamber.
• Engineers designed the engine to operate hypergolically, eliminating the need for a spark plug.
• The propellants reacted hypergolically, providing reliable ignition in the vacuum of space.
• This hypergolically reactive fuel mixture is commonly used in spacecraft thrusters.