rectification

definition: determination of the length of a curve
example:
speech part: noun
synonyms:
definition: the act of offering an improvement to replace a mistake
example:
speech part: noun
synonyms: correction
definition: the conversion of alternating current to direct current
example:
speech part: noun
synonyms:
definition: (chemistry) the process of refinement or purification of a substance by distillation
example:
speech part: noun
synonyms:

rectification is explained and pronounced

How rectification is being used?