cementation (n.) Look up cementation at Dictionary.com
1590s, from cement (v.) + noun ending -ation.
cemetery (n.) Look up cemetery at Dictionary.com
"graveyard, burial place," late 14c., from Old French cimetiere "graveyard" (12c.), from Late Latin coemeterium, from Greek koimeterion "sleeping place, dormitory," from koiman "to put to sleep," keimai "I lie down," from PIE root *kei- (1) "to lie," also forming words for "bed, couch."

Early Christian writers were the first to use it for "burial ground," though the Greek word also had been anciently used in reference to the sleep of death. In Middle English simeterie, cymytory, cimitere, etc.; forms with cem- are from late 15c. An Old English word for "cemetery" was licburg (see lich (n.)).
cenacle (n.) Look up cenacle at Dictionary.com
c. 1400, from Old French cenacle, variant of cenaille (14c., Modern French cénacle), from Latin cenaculum "dining room," from cena "mid-day meal, afternoon meal," literally "portion of food," from PIE *kert-sna-, from root *sker- (1) "to cut." Latin cenaculum was used in the Vulgate for the "upper room" where the Last Supper was eaten.
cenobite (n.) Look up cenobite at Dictionary.com
also coenobite, "member of a communal religious order," 1630s, from Church Latin coenobita "a cloister brother," from coenobium "a convent," from Greek koinobion "life in community, monastery," from koinos "common" (see coeno-) + bios "life," from PIE root *gwei- "to live."
cenotaph (n.) Look up cenotaph at Dictionary.com
c. 1600, from French cénotaphe (16c.), from Latin cenotaphium, from Greek kenotaphion, from kenos "empty" (see keno-) + taphos "tomb, burial, funeral," from PIE root *dhembh- "to bury."
Cenozoic (adj.) Look up Cenozoic at Dictionary.com
"the third great geological period," 1841, Cainozoic, from Latinized form of Greek kainos "new, fresh, recent, novel" (see recent) + zoon "animal," but here with a sense of "life" (from PIE root *gwei- "to live"). The era that began with the demise of the dinosaurs and the rise of "recent" species; it also is known as the Tertiary.
cense (v.) Look up cense at Dictionary.com
"to perfume with burning incense," late 14c., a shortened form of incense. Related: Censed; censing.
censer (n.) Look up censer at Dictionary.com
"vessel used for burning incense," mid-13c., from Old French censier, a shortened form of encensier, from encens "incense" (see incense (n.)).
censor (n.) Look up censor at Dictionary.com
1530s, "Roman magistrate who took censuses and oversaw public morals," from Middle French censor and directly from Latin censor, from censere "to appraise, value, judge," from PIE root *kens- "speak solemnly, announce" (source also of Sanskrit śamsati "recites, praises," śasa "song of praise").

There were two of them at a time in classical times, usually patricians, and they also had charge of public finances and public works. Transferred sense of "officious judge of morals and conduct" in English is from 1590s. Roman censor also had a transferred sense of "a severe judge; a rigid moralist; a censurer." Of books, plays (later films, etc.), 1640s. By the early decades of the 19c. the meaning of the English word had shaded into "state agent charged with suppression of speech or published matter deemed politically subversive." Related: Censorial.
censor (v.) Look up censor at Dictionary.com
1833 of media, from censor (n.). Related: Censored; censoring.
censorious (adj.) Look up censorious at Dictionary.com
"fond of criticizing," 1530s, from Latin censorius "pertaining to a censor," also "rigid, severe," from censor (see censor (n.)). Related: Censoriously; censoriousness.
censorship (n.) Look up censorship at Dictionary.com
1590s, "office of a censor," from censor (n.) + -ship. Meaning "action of censoring" is from 1824.
censurable (adj.) Look up censurable at Dictionary.com
1630s, from censure + -able. Related: Censurability.
censure (n.) Look up censure at Dictionary.com
late 14c., originally ecclesiastical, from Latin censura "judgment, opinion," also "office of a censor," from census, past participle of censere "appraise, estimate, assess" (see censor (n.)). General sense of "a finding of fault and an expression of condemnation" is from c. 1600.
censure (v.) Look up censure at Dictionary.com
1580s, from censure (n.) or else from French censurer, from censure (n.). Related: Censured; censuring.
Such men are so watchful to censure, that the have seldom much care to look for favourable interpretations of ambiguities, to set the general tenor of life against single failures, or to know how soon any slip of inadvertency has been expiated by sorrow and retractation; but let fly their fulminations, without mercy or prudence, against slight offences or casual temerities, against crimes never committed, or immediately repented. [Johnson, "Life of Sir Thomas Browne," 1756]
census (n.) Look up census at Dictionary.com
1610s, from Latin census "the enrollment of the names and property assessments of all Roman citizens," originally past participle of censere "to assess" (see censor (n.)). The modern census begins in the U.S., 1790., and Revolutionary France. Property for taxation was the primary purpose in Rome, hence Latin census also was used for "one's wealth, one's worth, wealthiness."
cent (n.) Look up cent at Dictionary.com
late 14c., from Latin centum "hundred" (see hundred). Middle English meaning was "one hundred," but it shifted 17c. to "hundredth part" under influence of percent. Chosen in this sense in 1786 as a name for a U.S. currency unit by Continental Congress. The word first was suggested by Robert Morris in 1782 under a different currency plan. Before the cent, Revolutionary and colonial dollars were reckoned in ninetieths, based on the exchange rate of Pennsylvania money and Spanish coin.
centaur (n.) Look up centaur at Dictionary.com
late 14c., from Latin centaurus, from Greek Kentauros, origin disputed. In early Greek literature they were a savage, horse-riding tribe from Thessaly; later they were monsters half horse, half man. The southern constellation of Centaurus is attested in English from 1550s but was known by that name to the Romans and known as a centaur to the Greeks. It has often been confused since classical times with Sagittarius.
centaury (n.) Look up centaury at Dictionary.com
small plant with red flowers (now usually erythraea Centaureum), late 14c., from Medieval Latin centaurea, from Latin centaureum, from Greek kentaureion, from kentauros "centaur" (see centaur), so called according to Pliny because the plant's medicinal properties were discovered by Chiron the centaur.

German Tausendgüldenkraut is based on a mistranslation of the Latin word, as if from centum + aurum (the similarity might be the result of Roman folk etymology).
centenarian (n.) Look up centenarian at Dictionary.com
1805, "person 100 years old," from centenary + -ian. As an adjective, "pertaining to a person 100 years old," recorded from 1806.
centenary (adj.) Look up centenary at Dictionary.com
c. 1600, "period of 100 years," from Latin centenarius "of a hundred, relating to a hundred," from centenai "a hundred each," from centum "hundred" (see hundred). As a noun, "100th anniversary," from 1788.
centennial (adj.) Look up centennial at Dictionary.com
1789, from Latin centum "one hundred" (see hundred) + ending from biennial. As a noun, "hundredth anniversary celebration," from 1876; the older noun is centenary.
center (n.) Look up center at Dictionary.com
late 14c., "middle point of a circle; point round which something revolves," from Old French centre (14c.), from Latin centrum "center," originally fixed point of the two points of a drafting compass, from Greek kentron "sharp point, goad, sting of a wasp," from kentein "stitch," from PIE root *kent- "to prick" (source also of Breton kentr "a spur," Welsh cethr "nail," Old High German hantag "sharp, pointed").

Figuratively from 1680s. Meaning "the middle of anything" attested from 1590s. Spelling with -re popularized in Britain by Johnson's dictionary (following Bailey's), though -er is older and was used by Shakespeare, Milton, and Pope. Center of gravity is recorded from 1650s. Center of attention is from 1868.
center (v.) Look up center at Dictionary.com
1590s, "to concentrate at a center," from center (n.). Meaning "to rest as at a center" is from 1620s. Sports sense of "to hit toward the center" is from 1890. Related: Centered; centering. To be centered on is from 1713. In combinations, -centered is attested by 1958.
centerfield (n.) Look up centerfield at Dictionary.com
also center-field, 1857 in baseball, from center (n.) + field (n.). Related: Center-fielder.
centerfold (n.) Look up centerfold at Dictionary.com
also center-fold, "fold-out center spread of a magazine or newspaper," 1950, from center (n.) + fold (n.2). "Playboy" debuted December 1953, and the word came to be used especially for illustrations of comely women, hence "woman who poses as a centerfold model" (by 1965).
centerpiece (n.) Look up centerpiece at Dictionary.com
also center-piece, 1800, from center + piece (n.). Figurative sense is recorded from 1937.
centi- Look up centi- at Dictionary.com
word-forming element meaning "one hundred" or "one hundredth part," used in English from c. 1800, from the French metric system, from Latin centi-, comb. form of centum "one hundred" (see hundred).
centigrade (adj.) Look up centigrade at Dictionary.com
1799, from French, from centi- "hundred" (see centi-) + second element from Latin gradi "to walk, go, step" (see grade (n.)).
centigram (n.) Look up centigram at Dictionary.com
also centigramme, 1801, from French centigramme; see centi- + gram.
centiliter (n.) Look up centiliter at Dictionary.com
also centilitre, 1801, from French centilitre; see centi- + liter.
centillion (n.) Look up centillion at Dictionary.com
1846, from centi- "one hundred" (in reference to the 100 groups of three zeroes it has above 1,000) + ending from million, etc. Compare French centillion (by 1841). Related: Centillionth.
centime (n.) Look up centime at Dictionary.com
1801, from French centime, from cent "one hundred" (see centi-) on analogy of décime (pars) (see dime (n.)).
centimeter (n.) Look up centimeter at Dictionary.com
also centimetre, 1801, from French centimètre (18c.), coined from Latin centum "hundred" (see hundred) + French mètre (see meter (n.2)).
centipede (n.) Look up centipede at Dictionary.com
venomous, many-legged, insect-sized arthropod, 1640s, from French centipède, from Latin centipeda "many-footed arthropod," from centum "hundred" (see hundred) + pedis, genitive of pes "foot" (from PIE root *ped- "foot").
central (adj.) Look up central at Dictionary.com
1640s, from French central or directly from Latin centralis "pertaining to a center," from centrum (see center (n.)). Centrally is attested perhaps as early as early 15c., which might imply a usage of central earlier than the attested date.

Slightly older is centric (1580s). As a U.S. colloquial noun for "central telephone exchange," first recorded 1889 (hence, "Hello, Central?"). Central processing unit attested from 1961. Central America is attested from 1826.
centrality (n.) Look up centrality at Dictionary.com
1640s; see central (adj.) + -ity.
centralization (n.) Look up centralization at Dictionary.com
1801, especially of administrative power, originally with reference to Napoleonic France and on model of French centralisation. See centralize + -ation.
centralize (v.) Look up centralize at Dictionary.com
1795, "to bring to a center;" 1800, "come to a center," from central + -ize, on model of French centraliser (1790). A word from the French Revolution. Related: Centralized; centralizing.
Government should have a central point throughout its whole periphery. The state of the monthly expences amounted to four hundred millions; but within these seven months, it is reduced to one hundred and eighty millions. Such is the effect of the centralization of government; and the more we centralize it, the more we shall find our expenses decrease. [Saint-Just, "Discourse on the State of the Finances"]
centre Look up centre at Dictionary.com
chiefly British English spelling of center (q.v.); for ending, see -re.
centrifugal (adj.) Look up centrifugal at Dictionary.com
1690s, with adjectival suffix -al (1) + Modern Latin centrifugus, 1687, coined by Sir Isaac Newton (who wrote in Latin) in "Principia" (which is written in Latin), from Latin centri-, alternative combining form of centrum "center" (see center (n.)) + fugere "to flee" (see fugitive (adj.)). Centrifugal force is Newton's vis centrifuga.
centrifuge (n.) Look up centrifuge at Dictionary.com
1887, "a centrifuge machine," originally a machine for separating cream from milk, from French centrifuge, from noun use of adjective meaning "centrifugal" (1801), from Modern Latin centrifugus (see centrifugal).
centriole (n.) Look up centriole at Dictionary.com
1896, from German centriol (1895), from Modern Latin centriolum, diminutive of centrum (see center (n.)).
centripetal (adj.) Look up centripetal at Dictionary.com
1709, from Modern Latin, coined 1687 by Sir Isaac Newton (who wrote in Latin), from Latin centri-, alternative combining form of centrum "center" (see center (n.)) + petere "to make for, go to; seek, strive after" (see petition (n.)). Centripetal force is Newton's vim ... centripetam.
centrism (n.) Look up centrism at Dictionary.com
1935, from centre + -ism (also see centrist).
centrist (n.) Look up centrist at Dictionary.com
1872, from French centriste, from centre (see center (n.)). Originally in English with reference to French politics; general application to other political situations is from 1890.
Where M. St. Hilaire is seen to most advantage, however, is when quietly nursing one of that weak-kneed congregation who sit in the middle of the House, and call themselves "Centrists." A French Centrist is--exceptis eoccipiendis--a man who has never been able to make up his mind, nor is likely to. ["Men of the Third Republic," London, 1873]
centrosome (n.) Look up centrosome at Dictionary.com
1889, from German centrosoma (1888), coined by German zoologist Theodor Boveri (1862-1915), from centro- (see center (n.)) + -some (3)).
centurion (n.) Look up centurion at Dictionary.com
late 13c., from Latin centurionem (nominative centurio), "Roman army officer, head of a centuria" (a group of one hundred); see century.
century (n.) Look up century at Dictionary.com
1530s, "one hundred (of anything)," from Latin centuria "group of one hundred" of things of one kind (including a measure of land and a division of the Roman army, one-sixteenth of a legion, headed by a centurion), from centum "hundred" (see hundred) on analogy of decuria "a company of ten."

Used in Middle English from late 14c. as a division of land, from Roman use. The Modern English meaning is attested from 1650s, short for century of years (1620s). The older, general sense is preserved in the meaning "score of 100 points" in cricket and some other sports. Related: Centurial.
CEO (n.) Look up CEO at Dictionary.com
by 1984; abbreviation of chief executive officer.