(1) Powerful; mighty; possessing strength; having control, influence or dominion.
(2) Effective; efficacious, as in a potent medicine.
(3) (Of a male) able to procreate or copulate.
Word origin: Latin potens, –entis, p. Pr. Of posse to be able, to have power, fr. Potis able, capable.
Related form: potency (noun)