(v): establish after a calculation, investigation, experiment, survey, or study
(v): reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities
(v): remove impurities from, increase the concentration of, and separate through the process of distillation
(v): bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one
(v): cause to change; make different; cause a transformation
(v): set straight or right
(v): make right or correct
(v): make right or correct
(v): change to the contrary
(v): convert into direct current
(v): exchange or replace with another, usually of the same kind or category