reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities | set straight or right |
improve or perfect by pruning or polishing | make right or correct |
treat or prepare so as to put in a usable condition | reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities |
attenuate or reduce in vigor, strength, or intensity by polishing or purifying | convert into direct current |
make more precise or increase the discriminatory powers of | bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one |
make more complex, intricate, or richer | determine the length of |