p.pr. & ·vb.n. of prime.
2. priming ·noun the carrying over of water, with the steam, from the boiler, as into the cylinder.
3. priming ·noun the first coating of color, size, or the like, laid on canvas, or on a building, or other surface.
4. priming ·noun the powder or other combustible used to communicate fire to a charge of gunpowder, as in a firearm.