What is the meaning of resistance?

noun

• The action of opposing something that you disapprove or disagree with.
  • usage: "he encountered a general feeling of resistance from many citizens"; "despite opposition from the newspapers he went ahead"
  • synonyms: opposition
• Any mechanical force that tends to retard or oppose motion.
• A material's opposition to the flow of electric current; measured in ohms.
  • synonyms: electric resistance, electrical resistance, impedance, resistivity, ohmic resistance
• The military action of resisting the enemy's advance.
  • usage: "the enemy offered little resistance"
• Medicine) the condition in which an organism can resist disease.
  • synonyms: immunity
• The capacity of an organism to defend itself against harmful environmental agents.
  • usage: "these trees are widely planted because of their resistance to salt and smog"
• A secret group organized to overthrow a government or occupation force.
  • synonyms: underground
• The degree of unresponsiveness of a disease-causing microorganism to antibiotics or other drugs (as in penicillin-resistant bacteria. )
• Psychiatry) an unwillingness to bring repressed feelings into conscious awareness. (
• An electrical device that resists the flow of electrical current.
  • synonyms: resistor
• Group action in opposition to those in power. .