>In common parlance ex means 'example'.
This claim is wrong.
You meant to say "ex." is common, noting the period for the abbreviation. Whereas ex is commonly used (See "ex dividend".) as I did above.
I'm skipping the rest of your reply because it's a waste of time after you loaded up with a spiteful tone -- "you don't know what you're talking about"-- only to be wrong about language and somehow you dispute the Wikipedia article which clearly mentions (anti-)Bolshevik opponents.
it's ok, I know you meant for this thread to diverge into pointless arguments. But for everyone else reading:
1. https://www.oed.com/search/dictionary/?scope=Entries&q=ex
2. "Bolsheviks" aren't a nation.
You linked a dictionary that's paywalled and further, all of the 12 stub entries appear to refute your interpreted meaning of "ex" from earlier and affirm my usage.
Are you trying to be ironic?
Also, nobody said #2.