1. [n]  the act of checking or adjusting (by comparison with a standard) the accuracy of a measuring instrument; "the thermometer needed calibration"
2. [n]  the imposition of standards or regulations; "a committee was appointed to recommend terminological standardization"
3. [n]  the condition in which a standard has been successfully established; "standardization of nuts and bolts had saved industry millions of dollars"

STANDARDISATION is a 15 letter word that starts with S.