resistance

:  of, relating to, or being exercise involving pushing or pulling against a source of resistance (such as a weight) to increase strength resistance training

1 :  an act or instance of opposing

2 :  the ability to withstand the force or effect of resistance to disease

3 :  an opposing or slowing force The car's sleek design reduces wind resistance.

4 :  the opposition offered by a substance to the passage through it of an electric current

1a:  power or capacity to resist; especially :  the inherent ability of an organism to resist harmful influences (as disease, toxic agents, or infection)b:  the capacity of a species or strain of microorganism to survive exposure to a toxic agent (as a drug) formerly effective against it due to genetic mutation and selection for and accumulation of genes conferring protection from the agent especially as a result of overuse of the agent which selectively destroys individual microorganisms lacking the protective genes

2a:  the opposition offered by a body to the passage through it of a steady electric currentb:  opposition or impediment to the flow of a fluid (as blood or respiratory gases) through one or more passages—see vascular resistance

3:  a psychological defense mechanism wherein a psychoanalysis patient rejects, denies, or otherwise opposes therapeutic efforts by the analyst