to make better by removing faults and defects; correct: to reform a calendar
to make better by putting a stop to abuses or malpractices or by introducing better procedures, etc.
to put a stop to (abuses, etc.)
to cause or persuade (a person) to give up misconduct and behave better
Chem. to heat (petroleum products) under pressure, with or without catalysts, to produce cracking and a greater yield of gasoline or an improved octane number
intransitive verb
to become better in behavior
noun
a correction of faults or evils, as in government or society; social or political improvement
an improvement in character and conduct; reformation
a movement aimed at removing political or social abuses
adjective
☆ designating or of a movement in Judaism that attempts to make rational thought compatible with historical Judaism, stressing its ethical aspects and not requiring strict observance of traditional Orthodox ritual