refine

verb

1. 1

   make more complex, intricate, or richer

   refine a design or pattern

2. 2

   make more precise or increase the discriminatory powers of

   refine a method of analysis

   refine the constant in the equation

3. 3

   attenuate or reduce in vigor, strength, or validity by polishing or purifying

   many valuable nutrients are refined out of the foods in our modern diet

4. 4

   improve or perfect by pruning or polishing

   refine one's style of writing

5. 5

   reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities

   refine sugar

6. 6

   treat or prepare so as to put in a usable condition

   refine paper stock

   refine pig iron