Definition of "Refinement" :

noun: the quality of excellence in thought and manners and taste

"A man of intellectual refinement."

noun: a subtle difference in meaning or opinion or attitude

noun: the result of improving something

"He described a refinement of this technique."

noun: the process of removing impurities (as from oil or metals or sugar etc.)

noun: a highly developed state of perfection; having a flawless or impeccable quality

"I admired the exquisite refinement of his prose."