Source : Webster's Revised Unabridged Dictionary (1913)

Potential \Po*ten"tial\, n.
   1. Anything that may be possible; a possibility; potentially.
      --Bacon.

   2. (Math.) In the theory of gravitation, or of other forces
      acting in space, a function of the rectangular coordinates
      which determine the position of a point, such that its
      differential coefficients with respect to the
      co["o]rdinates are equal to the components of the force at
      the point considered; -- also called {potential function},
      or {force function}. It is called also {Newtonian
      potential} when the force is directed to a fixed center
      and is inversely as the square of the distance from the
      center.

   3. (Elec.) The energy of an electrical charge measured by its
      power to do work; hence, the degree of electrification as
      referred to some standard, as that of the earth;
      electro-motive force.

Potential \Po*ten"tial\, a. [Cf. F. potentiel. See {Potency}.]
   1. Being potent; endowed with energy adequate to a result;
      efficacious; influential. [Obs.] ``And hath in his effect
      a voice potential.'' --Shak.

   2. Existing in possibility, not in actuality. ``A potential
      hero.'' --Carlyle.

            Potential existence means merely that the thing may
            be at ome time; actual existence, that it now is.
                                                  --Sir W.
                                                  Hamilton.

   {Potential cautery}. See under {Cautery}.

   {Potential energy}. (Mech.) See the Note under {Energy}.

   {Potential mood}, or {mode} (Gram.), that form of the verb
      which is used to express possibility, liberty, power,
      will, obligation, or necessity, by the use of may, can,
      must, might, could, would, or should; as, I may go; he can
      write.

Source : WordNet®

potential
     n 1: the inherent capacity for coming into being [syn: {potentiality},
           {potency}]
     2: the difference in electrical charge between two points in a
        circuit expressed in volts [syn: {electric potential}, {potential
        difference}, {potential drop}, {voltage}]

potential
     adj 1: existing in possibility; "a potential problem"; "possible
            uses of nuclear power" [syn: {possible}] [ant: {actual}]
     2: expected to become or be; in prospect; "potential clients";
        "expected income" [syn: {expected}, {likely}]