Is 75 ohm coax the same as S/PDIF?


I'm new to digital connections and I'd like to get a DAC to take the digital out of my CD player and eventually from a computer thru USB. So I need to make sure whichever DAC I get can accept the 75 ohm coax out of my CD player. It looks like an RCA, and so does an S/PDIF connector, I believe. Yet I undestand S/PDIF is a protocol...so I'm confused.

Would anyone please clarify?
lewinskih01
It means Sony/Phillips digital interface. It is not always necessary to use 75 ohm; I have used many dedicated digital cables up to ones costing $1500 but right now I am using a standard IC between my transport and DAC.
Thanks for the feedback, but I'm thinking I probably didn't make myself clear: my CD player has a digital out (RCA) that the manual says it's a 75 ohm coax connection. If I get a DAC with S/PDIF input and buy the appropriate cable, will the two work together?

Thanks!
Kr, thanks for the straight answer. I'm only hoping you answered the question I think you did!
You asked 2 questions:
Would anyone please clarify?
Clearly, if I had answered this with "Yes," it would be ambiguous.

If I get a DAC with S/PDIF input and buy the appropriate cable, will the two work together?
Yes.