Yes, priming is a Scrabble word!

Verb

1. Insert a primer into (a gun, mine, or charge) preparatory to detonation or firing

2. Cover with a primer; apply a primer to

3. Fill with priming liquid

4. Assume a prim appearance

5. Contract one's lips

6. Dress primly

Noun

1. The act of making something ready

2. Any igniter that is used to initiate the burning of a propellant

3. The first or preliminary coat of paint or size applied to a surface