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I know you know what you are talking about, it's going to take a little while for the info to sink in and me to get comfortable with it.
Full stops are f/1, f/1.4, f/2, f/2.8, f/4, f/5.6, f/8, f/11, f/16, etc. Most cameras display discrete intervals of one third stops. So between f/8 and f/11, you have f/9 (= f/8 + 1/3) and f/10 (= f/8 + 2/3). Some cameras allow you to change the display so that it only shows half stops, and there may be a few that allow you to only display whole stops. And although most lighting equipment can be adjusted in increments of 1/10 stop, I know of no camera that does that.
So your meter is showing f8 + 9/10, or just a tenth of a stop lower than f/11. F/11 is the closest exposure you can set on your camera to match a light meter reading of f/8 + 9/10.