Definition of: resistance

(ri·zis′təns) noun
1. The act of resisting.
2. Any force tending to hinder motion.
3. Electr. a The opposition offered by a body to the passage through it of an electric current: expressed in ohms: the reciprocal of conductance, b Impedance.
4. Psychol. The force tending to prevent the return to consciousness of unpleasant incidents and experiences.
5. The underground and guerrilla movement opposing an occupying power. See synonyms under DEFENSE. [<F résistance]