http://perdic.com/?w=potential

as adjective:

1.possible, as opposed to actual:
the potential uses of nuclear energy.

2.capable of being or becoming:
a potential danger to safety.

3.Grammar. expressing possibility:
the potential subjunctive in Latin; the potential use ofcan inI can go.

as noun

4.possibility; potentiality:
an investment that has little growth potential.

5.a latent excellence or ability that may or may not be developed.

http://dictionary.reference.com/browse/potential