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English version of VDA dictionary

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Extent to which planned activities are realised and planned results achieved.


Relationship between the result achieved and the resources used.

Escalation, stages of escalation

Transfer of a problem that cannot be resolved on the actual organisational level to the next higher decision-making level according to specified rules.

Etalon; Measurement standard

Etalon, measurement standard: measuring instrument, measurement equipment or reference material kept for retention or reproduction the purpose of which is to represent a unit or one or more known values of a single quantity and thus allow for comparison and connection of one measuring instrument with another.


Demonstration of the activities performed, usually for a submitted product.

Evidence of conformity

If a result of measurement Y (measured value y, including measurement uncertainty U) falls within the level of tolerance, conformity with the tolerance is clearly demonstrated and the product is accepted.

Evidence of nonconformity

Nonconformity with tolerance is clearly demonstrated if measurement result Y (measured value y, including measurement uncertainty U) is beyond the level of tolerance. In such case, the product shall be rejected.


The ease with which a component/module can be altered or extended to, e.g. increase the memory capacity or functionality (cf. ISO 9126 “Software Quality Characteristics”).

Extinction (at OPZ)

Variation of illumination initiated by a particle and conditioned by absorption and dispersion.