priming

definition: any igniter that is used to initiate the burning of a propellant
example:
speech part: noun
synonyms: primer fuze fusee fuzee fuse
definition: the act of making something ready
example:
speech part: noun
synonyms:
definition: the first or preliminary coat of paint or size applied to a surface
example:
speech part: noun
synonyms: undercoat flat coat ground primer primer coat priming coat

How priming is being used?