What is the Latin word for reform, reformation?

The usual Latin words for “reform, reformation” are corrēctiō, ēmendātiō. The right choice depends on the sense; see the distinctions below.

English → Latin

“reform, reformation” in Latin

corrēctiōcorrection, amendment; support, foundation ēmendātiōcorrection; amendment; improvement, betterment

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

reform, reformation

Improvement, correctio: emendatio. (The words are found in this connection and order.) correctio et emendatio, alicujus rei [SYN. in REFORM].

Amendment in morals and conduct, mores emendatiores (vita emendatior Ulp., Dig.).

Quick answer

What is the Latin word for reform, reformation?: The usual Latin words for “reform, reformation” are corrēctiō, ēmendātiō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.