A requirement that is implied or transformed from a higher-level requirement. Note 1: Implied requirements cannot be assessed since they are not contained in any requirement baseline. The decomposition of requirements throughout the engineering process makes the implicit requirements explicit, allowing them to be stated and captured in appropriate baselines and allowing associated assessment criteria to be stated. Note 2: A derived requirement must trace back to at least one higher-level requirement.
Sources:
NIST SP 800-37 Rev. 2
under derived requirements
A requirement deduced or inferred from the collection and organization of requirements into a particular system configuration and solution.
Sources:
NIST SP 800-160v1r1
from
ISO/IEC/IEEE 29148:2018