1 adj A refined substance has been made pure by having other substances removed from it.
usu ADJ n
2 adj If you say that someone is refined, you mean that they are very polite and have good manners and good taste.
...refined and well-dressed ladies...
3 adj If you describe a machine or a process as refined, you mean that it has been carefully developed and is therefore very efficient or elegant.
This technique is becoming more refined and more acceptable all the time.
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"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"