### Clue: Travelled between prospective southern terminals (10)
### Answer: ELECTRODES 
 ### Explanation: Definition: terminals
 [ RODE(travelled, say, on a horse or a bike or in a car) **contained in**(between) [-ELECT](indicating a prospective appointee, chosen but not in office yet) ] + S(abbrev. for "southern").
Defn: Conductors through which electricity enters or leaves an object.