What is the meaning of certified?

verb

• Provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes.
  • usage: "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sense of fairness"
  • synonyms: attest, certify, manifest, demonstrate, evidence
• Guarantee payment on; of checks.
  • synonyms: certify
• Authorize officially.
  • usage: "I am licensed to practice law in this state"
  • synonyms: license, licence, certify
• Guarantee as meeting a certain standard.
  • usage: "certified grade AAA meat"
  • synonyms: certify, endorse, indorse
• Declare legally insane.
  • synonyms: certify

adjective

• Endorsed authoritatively as having met certain requirements.
  • usage: "a certified public accountant"
• Fit to be certified as insane (and treated accordingly.
  • synonyms: certifiable
• Holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill.
  • usage: "a registered pharmacist"; "a registered hospital"
  • synonyms: qualified