Corbomite > Dilithium
I'm not sure I ever saw that one.
I only saw the show in re-runs, in the early 70s, when it aired on the 'independent' station right before 'Speed Racer' (which I didn't bother to watch because Japanese animation was inferior in those days, except for lulz and Gamera reruns). I stopped watching TV altogether around the time Star Trek was turned into cartoons, 1973 say. Though I remember breaking my rule to watch Nixon's resignation speech in 1975.
I should also mention that the same TV station aired Tarzan (Friday evenings) and Charlie Chan (Sunday Afternoons) with impunity. America was a different country then. Confucius say: Ungawa, Cheetah.