censor

Etymology 1

The noun is borrowed from Latin cēnsor (“magistrate; critic”), from cēnseō (“to give an opinion, judge; to assess, reckon; to decree, determine”) + -sor (variant of -tor (suffix forming masculine agent nouns)). Cēnseō is derived from Proto-Italic *kensēō, ultimately from Proto-Indo-European *ḱens- (“to announce, proclaim; to put in order”). The English word is cognate with Late Middle English sensour, Proto-Iranian *cánhati (“to declare; to explain”), Sanskrit शंसति (śaṃsati, “to declare”). The verb is derived from the noun.

noun

1. (Ancient Rome, historical) One of the two magistrates who originally administered the census of citizens, and by Classical times (between the 8th century B.C.E. and the 6th century C.E.) was a high judge of public behaviour and morality.
   The Ancient Roman censors were part of the cursus honorum, a series of public offices held during a political career, like consuls and praetors.
   Neither [the Segetes Lustrantur and the Oves Lustrantur] are in this place, to be underſtood the Luſtra, which were wont to be Celebrated at Rome by the Cenſors, after the Cenſus of Citizens was made by a Sacrifice of the Suovetaurilia; for they had ceaſed long ago, as appeareth by what Cenſorinus writeth in his Book de Die Natali; at which time the Office of Cenſors also ceaſed, which ſome endeavoured, though in vain, to re-eſtabliſh. 1685, William Howel[l], “The History of the Reformation of Religion by Constantine”, in An Institution of General History, or The History of Ecclesiastical Affairs of the World.[…], London: […] Miles Flesher, →OCLC, paragraph 17, page 7
   https://archive.org/details/romaeantiquaenot00kenn_0/page/n165/mode/1up page 110 [Justus] Lipſius divides the Duty of the Cenſors into two Heads; the Survey of the People, and the Cenſure of Manners. […] With respect to the latter part of their Office, they had the power to puniſh an Immorality in any Perſon, of what Order ſoever. […] https://archive.org/details/romaeantiquaenot00kenn_0/page/n166/mode/1up page 111 'Tis very remarkable, that if one of the Cenſors died, no body was ſubſtituted in his room 'till the next Luſtrum, and his Partner was oblig'd to quit his Office; becauſe the Death of a Cenſor happen'd juſt before the ſacking of Rome by the Gauls, and was ever after accounted highly ominous and unfortunate. 1696, Basil Kennett, “Of the Censors”, in Romæ Antiquæ Notitia: Or, The Antiquities of Rome.[…], London: […] A. Swall and T. Child,[…], →OCLC, part II, book III (Of the Civil Government of the Romans), pages 110–111
   The Censors were always two in number, and were originally chosen from the Patricians exclusively. In B.C. 351, we find for the first time a Plebeian Censor, G[aius] Marcius Rutilus. In B.C. 339, a Lex Publilia was passed by Q[uintus] Publilius Philo when Dictator, enacting that at least one of the Censors must be a Plebeian. 1876, William Ramsay, “Magistrates of the Regal and Republican Periods and under the Early Emperors”, in A Manual of Roman Antiquities, 10th edition, London: Charles Griffin and Company[…], →OCLC, page 165
2. (Ancient China, historical) A high-ranking official who was responsible for the supervision of subordinate government officials.
3. An official responsible for the removal or suppression of objectionable material (for example, if obscene or likely to incite violence) or sensitive content in books, films, correspondence, and other media.
   The headmaster was an even stricter censor of his boarding pupils’ correspondence than the enemy censors had been of his own when the country was occupied.
   There being a censor of public morals I will refrain from giving that worthy warrior's reply when he had digested this astounding piece of information; it is sufficient to say that it did not encourage further conversation, nor did it soothe our hero's nerves. 1917, Sapper [pseudonym; Herman Cyril McNeile], “The Seed”, in No Man’s Land, New York, N.Y.: George H[enry] Doran Company, →OCLC, part 3 (Seed Time), page 260
4. (education) A college or university official whose duties vary depending on the institution.
5. (obsolete) One who censures or condemns.
6. (computing) An algorithm that approves or rejects something on grounds of taste or morality etc.
   I tried using a dirty word as my user name for the online game, but the censor rejected it.

verb

1. (transitive) To review for, and if necessary to remove or suppress, content from books, films, correspondence, and other media which is regarded as objectionable (for example, obscene, likely to incite violence, or sensitive).
   The people responsible for censoring films have seen some startling things in their time.
   Occupying powers typically censor anything reeking of resistance
   Ganley is in hourly dread of every message that comes into your wireless-room. He insists on censoring anything that might betray him. 1909, Arthur Stringer, “The Movement in Retreat”, in The Gun-runner, New York, N.Y.: B. W. Dodge & Company, →OCLC, page 134

Etymology 2

From an incorrect translation of German Zensur (“censorship”).

noun

1. (psychology) A hypothetical subconscious agency which filters unacceptable thought before it reaches the conscious mind.