piirdus
Piirdus is a term used in theoretical and applied disciplines to denote the set of boundaries, limits, or constraints that define the allowable states or actions of a system. In this sense, a piirdus describes the operating envelope within which a process, organization, or policy must function. The concept is widely used in fields such as control theory, risk assessment, governance, and systems engineering to clarify what is permissible and what lies outside acceptable parameters.
Etymology and usage: Piirdus is a neologism that appears in multidisciplinary literature to capture the idea
Applications: In engineering and automation, piirdus helps specify operating envelopes that ensure stability and safety. In
See also: boundary, constraint, limit, operating envelope, safety margin, regulatory threshold.