In an electrochemical cell, an electric
potential is created between two dissimilar metals. This potential is a measurement of the energy per unit charge which is
available from the oxidation/reduction reactions to drive the reaction. It is usual to visualize the cell reaction in terms
of two half-reactions, an oxidation half-reaction and a reduction half-reaction.
The cell potential (known as electromotive force or emf) , is contributed
from the anode, is a measure of its ability to lose electrons - known as its "oxidation potential". The cathode is contributed
to based upon its ability to gain electrons, its "reduction potential".
“The standard potential is the electromotive force of an electrochemical
cell comprised of the electrode in question and the standard hydrogen electrode.” -http://electrochem.cwru.edu/ed/dict.htm