The process of confirming or denying that a claimed identity is correct by comparing the credentials of a person requesting access with those previously proven and associated with the PIV Card or a derived PIV credential associated with the identity being claimed.
Sources:
FIPS 201-3 under Identity Verification

  Confirmation, through the provision of objective evidence, that specified requirements have been fulfilled.
Sources:
NIST SP 800-160v1r1 from ISO 9000:2015
NIST SP 800-161r1 from CNSSI 4009-2015, ISO 9000:2015 - adapted

  Confirmation, through the provision of objective evidence, that specified requirements have been fulfilled (e.g., an entity’s requirements have been correctly defined, or an entity’s attributes have been correctly presented; or a procedure or function performs as intended and leads to the expected outcome.
Sources:
CNSSI 4009-2015

  The process of testing the media to ensure the information cannot be read.
Sources:
NIST SP 800-88 Rev. 1 under Verification

  Confirmation, through the provision of objective evidence, that specified requirements have been fulfilled (e.g., an entity’s requirements have been correctly defined, or an entity’s attributes have been correctly presented; or a procedure or function performs as intended and leads to the expected outcome). Adapted from Verification.
Sources:
NIST SP 1800-21B under Identity Verification from CNSSI 4009-2015

  Confirmation, through the provision of objective evidence, that specified requirements have been fulfilled (e.g., an entity’s requirements have been correctly defined, or an entity’s attributes have been correctly presented; or a procedure or function performs as intended and leads to the expected outcome).
Sources:
NISTIR 7622 under Verification from CNSSI 4009, ISO 9000 - Adapted

  Internal phase within the NVD where a second, usually more experienced, NVD Analyst verifies the work completed during the Initial Analysis.
Sources:
NISTIR 8246 under Verification

  The process of producing objective evidence that sufficiently demonstrates that the system satisfies its security requirements and security characteristics with the level of assurance that applies to the system.
Sources:
NIST IR 8401 from NIST SP 800-160v1r1 - adapted

  Process of producing objective evidence that sufficiently demonstrates that the system satisfies its security requirements and security characteristics with the level of assurance that applies to the system.
Sources:
NIST IR 8323r1
NIST IR 8441 from NIST SP 800-160v1r1 - §3.4.9, adapted