the act of cleaning by getting rid of impurities | the act of offering an improvement to replace a mistake; setting right |
the act of purging of sin or guilt; moral or spiritual cleansing | determination of the length of a curve; finding a straight line equal in length to a given curve |
a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites | the conversion of alternating current to direct current |
the process of removing impurities (as from oil or metals or sugar etc.) | (chemistry) the process of refinement or purification of a substance by distillation |