The process of changing the status of a valid certificate to suspended (i.e., temporarily invalid).
Sources:
CNSSI 4009-2015
from
CNSSI 1300
The process of temporarily changing the status of a key or certificate to invalid (e.g., in order to determine if it has been compromised). The certificate may subsequently be revoked or reactivated.
Sources:
NIST SP 800-57 Part 2 Rev.1
under Suspension