refine

Etymology

It is formed from English re- + fine,^{[2][3][4][5][6]} the obsolete verb fine, to make fine, from the adjective fine in the sense "delicate";^[4][7] the prefix is perhaps intensive here.^[4][3] Several dictionaries add that it was influenced by French raffiner,^[6][8][7][9] formed from re- and affiner,^[2] and Skeat calls it coined in English but imitated from the French word.^[9] The OED compares Catalan refinar (1575), Spanish refinar, Portuguese refinar (1589), Medieval Latin refinio (“to separate metal from ore”) (about 1295, in a British source) and Middle French refiner (“to refine sugar”) (before 1469), which the French raffiner replaced; it also records an isolated English borrowing of the French verb in 1551.^[2] The adjective fine is from Old French fin (“perfected, of the highest quality”).^[4]

Earliest recorded meaning

To free from impurities, to purify: about 1572, in Paynell's translation of the Treasurie of Amadis of Fraunce,^[2] the year Merriam-Webster also gives.^[10] Barnhart dates the verb to 1582, though refined is perhaps implied earlier, in 1574,^[3] and Etymonline dates it to the 1580s, of metals.^[4]

Semantic evolution

The OED's earliest technical senses are the purifying of metals (1579) and of substances such as sugar (1582);^[2] Etymonline dates the sugar sense to the 1610s.^[4] Already in the 1580s and 1590s the word was used of language, style, the mind and morals: to polish a language (1582), to clear the spirits from dullness (1589) and to purify morally (1594), all now obsolete.^[2][6] The sense of freeing people or manners from coarseness, making them cultured, is recorded from 1592,^[2] and Barnhart finds refined in the sense "cultivated, elegant" in Shakespeare's Love's Labour's Lost (1588).^[3] The sense of improving a method or product by small changes also dates from 1592, and intransitive refine on or upon, to improve on something by making fine distinctions, from 1659.^[2][11] Johnson (1755) gave first the sense of purifying and clearing from dross, quoting the Book of Zechariah.^[12] The derivative refinement is recorded from 1611, in Cotgrave, and its senses of elegance, subtlety and improvement in Swift between 1708 and 1710; refinery dates from 1727.^[3]

Timeline

• c. 1572 – to free from impurities, to purify.^[2][10]
• 1574 – refined, subtle.^[3]
• 1579 – to purify metals.^[2]
• 1582 – to purify a substance such as sugar; to polish a language (obsolete by 1841).^[2]
• 1592 – to free from coarseness, to make cultured; to improve something by removing its defects.^[2]
• c. 1600 – intransitive, to become pure.^[4][2]
• 1659 – refine on, to improve on something.^[2]

Meanings

Verb

1. To remove impurities or unwanted matter from a substance; to purify: The mill refines the raw cane into white sugar.^[11][10][2]
2. To separate a mixture, such as crude oil, into pure parts.^[11][2]
3. To improve something by making small changes to it: The team refined its forecasting model over several seasons.^[2][11]
4. To make or become more elegant, cultured or polished, free of coarseness.^[11][2]
5. To improve on something by drawing finer distinctions, with on or upon.^[11][2]
6. (rare) To become pure or clear.^[2][11]

Word family

• refiner
• refinable
• overrefine
• superrefine
• refinement
• refinery

Related words

• fine
• affine
• finish
• finance

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o p q r s t Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
4. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
5. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
6. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
7. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
8. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
9. ^ a b Skeat, Walter W. (1911), A Concise Etymological Dictionary of the English Language, new ed., Oxford: Clarendon Press
10. ^ a b c Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
11. ^ a b c d e f g Collins English Dictionary (2023), Glasgow: HarperCollins
12. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.