Expurgation

[ek-sper-geyt] /ˈɛk spərˌgeɪt/

verb (used with object), expurgated, expurgating.
1.
to amend by removing words, passages, etc., deemed offensive or objectionable:
Most children read an expurgated version of Grimms’ fairy tales.
2.
to purge or cleanse of moral offensiveness.
/ˈɛkspəˌɡeɪt/
verb
1.
(transitive) to amend (a book, text, etc) by removing (obscene or offensive sections)
n.

early 15c., “a cleansing from impurity,” from Latin expurgationem (nominative expurgatio), noun of action from past participle stem of expurgare “to cleanse out, purge, purify,” from ex- “out” (see ex-) + purgare “to purge” (see purge). Sense of “remove objectionable passages from a literary work” first recorded in English 1610s.
v.

1620s, back-formation from expurgation or from Latin expurgatus, past participle of expurgare “to cleanse out, purge, purify” (see expurgation). Related: Expurgated; expurgating. The earlier verb was simply expurge (late 15c.), from Middle French expurger.
expurgate [(ek-spuhr-gayt)]

To clean up, remove impurities. An expurgated edition of a book has had offensive words or descriptions changed or removed.