If spraying I used to call it a mist coat. I think I once heard a paint and body guy called it that. But a lot of cuemakers do not spray, so I just put a thin seal coat.
So you just do an ultra thin coat of whatever you use for sealer? I use the solarez epoxy sealer but I was thinking I should do like 1 or 2 "fog" coats with with a spray sealer where I can really control how little I lay down and it will almost flash dry.