Oddly, it puts me in mind of electrochemistry. The anode, anodos is the 'rising way'; the cathode, kathodos, is the 'descending way'. If you know enough Greek, then you therefore know the anode is where the electrons rise from the cell into the rest of the circuit and the cathode is where the electrons descend into the cell.
But we celebrate Easter today, and it is not about Elektra, 'amber', leaving its cell. Something altogether more energetic escaped that day, and remains in the world at large.