Definition of "Resistance" :

noun: the action of opposing something that you disapprove or disagree with

"He encountered a general feeling of resistance from many citizens."

noun: the military action of resisting the enemy's advance

"The enemy offered little resistance."

noun: group action in opposition to those in power

noun: an electrical device that resists the flow of electrical current

noun: (psychiatry) an unwillingness to bring repressed feelings into conscious awareness

noun: the degree of unresponsiveness of a disease-causing microorganism to antibiotics or other drugs (as in penicillin-resistant bacteria)

noun: a secret group organized to overthrow a government or occupation force

noun: any mechanical force that tends to retard or oppose motion

noun: a material's opposition to the flow of electric current; measured in ohms

noun: the capacity of an organism to defend itself against harmful environmental agents

"These trees are widely planted because of their resistance to salt and smog."

noun: (medicine) the condition in which an organism can resist disease