n. The act of resisting; opposition; antagonism.n. The force exerted by a fluid or other medium to retard the motion of a body through it; more generally, any force which always acts in a direction opposite to the residual velocity, or to any component of it: as, resistance to shearing.n. In electricity, that property of a conductor in virtue of which the passage of a current through it is accompanied by a dissipation of energy; the transformation of electric energy into heat.n. Synonyms Hindrance, antagonism, check. See appose.n. In naval architecture, the reaction which a vessel opposes to an extraneous force by which it is dragged or driven through the water, and particularly to motion forward in the direction of the length of the vessel.n. Resistance to the flow of current which occurs at the surface between conductors in contact, as in the coherer, or between the liquid and the terminal of an electrolyticcell, or between the heated gas in the electric are and the carbon.n. The resistance offered by a dielectric to the passage of an electric current; the ohmic resistance of an insulating substance.