un reforming


Chemistry. the process of cracking low-octane petroleum fractions in order to increase the octane number.

1920–25; reform + -ing1

antireforming, adjective, noun
unreforming, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin & History

c.1300, "to convert into another and better form," from O.Fr. reformer (12c.), from L. reformare "to form again, change, alter," from re- "again" + formare "to form." The noun is 1660s, from the verb. Meaning "to bring (a person) away from an evil course of life" is recorded from early 15c.; of governments,
institutions, etc., from early 15c. Reformed churches (1588) usually are Calvinist as opposed to Lutheran. Reformed Judaism (1843) is a movement initiated in Germany by Moses Mendelssohn (1729-1786). Reformatory "house of correction for juveniles" first recorded 1834. Reform school is attested from 1859.
Online Etymology Dictionary, © 2010 Douglas Harper
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