What is the meaning of overriding?

verb

• Rule against.
  • usage: "The Republicans were overruled when the House voted on the bill"
  • synonyms: overrule, overturn, override, overthrow, reverse
• Prevail over.
  • usage: "health considerations override financial concerns"
  • synonyms: override
• Counteract the normal operation of (an automatic gear shift in a vehicle.
  • synonyms: override
• Ride (a horse) too hard.
  • synonyms: override

adjective

• Having superior power and influence.
  • usage: "the predominant mood among policy-makers is optimism"
  • synonyms: paramount, predominant, predominate, preponderant, preponderating