priming

A substance used as a primer.

The spot was bright and lively now; but in winter it became necessary to place sandbags against the door, and to stuff up the keyhole against the wind and rain, which had worn the paint so thin that the priming and knotting showed through.

A form of seed planting preparation in which the seeds are presoaked in a nanoparticle solution.

A harmful condition in which water is carried over from the boiler of a steam locomotive.

There have been failures, of course, and especially delays due to bad steaming, and, more often, priming.

The powder or other combustible used to communicate fire to a charge of gunpowder, as in a firearm.

The first contact that an antigen-specific T helper cell precursors have with an antigen.