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design margin

Abbreviation(s) and Synonym(s):

margin

Definition(s):

  The margin allocated during design based on assessments of uncertainty and unknowns. This margin is often consumed as the design matures.
Source(s):
NIST SP 800-160v1r1 from NASA Systems Engineering Handbook

  A spare amount or measure or degree allowed or given for contingencies or special situations. The allowances carried to account for uncertainties and risks.
Source(s):
NIST SP 800-160v1r1 under margin from MTR210263