When I first heard Troi was a "betazoid", I didnt know what that word meant. The suffix 'oid' was odd there.
I thought she would look like, I dont know, a squid or whatever.
Then someone said, betazoids are from Betazed.
The universal translator must have had a glitch. The word don't sound like a demonym.
Why Betazoid and not Betazedean, like Organian, Andorian, Vulcan, Alderaanian, Romulan, see what I am saying?