Quiz: Remember the definition of mal de mer?
c.1300, "to convert into another and better form," from Old French reformer "rebuild, reconstruct, recreate" (12c.), from Latin reformare "to form again, change, transform, alter," from re- "again" (see re-) + formare "to form" (see form (n.)). Intransitive sense from 1580s.
Meaning "to bring (a person) away from an evil course of life" is recorded from early 15c.; of governments, institutions, etc., from early 15c. Related: Reformed; reforming. Reformed churches (1580s) usually are Calvinist as opposed to Lutheran. Reformed Judaism (1843) is a movement initiated in Germany by Moses Mendelssohn (1729-1786). Reform school is attested from 1859.
"any proceeding which brings back a better order of things," 1660s, from reform (v.) and in some uses from French réforme. As a branch of Judaism from 1843.
in chemistry, processing technique by which the molecular structure of a hydrocarbon is rearranged to alter its properties. The process is frequently applied to low-quality gasoline stocks to improve their combustion characteristics. Thermal reforming alters the properties of low-grade naphthas by converting the molecules into those of higher octane number by exposing the materials to high temperatures and pressures. Catalytic reforming uses a catalyst, usually platinum, to produce a similar result. Mixed with hydrogen, naphtha is heated and passed over pellets of catalyst in a series of reactors, under high pressure, producing high-octane gasoline.