Etymology
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Words related to *dekm-

cent (n.)

late 14c., "one hundred," from Latin centum "hundred" (see hundred). The meaning shifted 17c. to "hundredth part" under influence of percent. It was chosen in this sense in 1786 as a name for a U.S. currency unit (the hundredth part of a dollar) by the 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.

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centenarian (n.)

1805, "person 100 years old or older," from centenary + -ian. As an adjective, "pertaining to a person 100 years old," recorded from 1806.

centenary (adj.)

1640s, "relation to or consisting 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, c. 1600 as "period of 100 years;" 1788 as "a hundredth anniversary, commemoration or celebration of a hundredth anniversary." The usual British word in this sense for the American centennial.

centi- 
word-forming element meaning "one hundred" or "one hundredth part," used in English from c. 1800, from the French metric system, from Latin centi-, combining form of centum "one hundred" (see hundred).
centime (n.)

French coin equal to one hundredth of a franc, 1801, from French centime, from cent "one hundred" (see centi-) on analogy of décime (pars) (see dime (n.)).

centurion (n.)

"military officer in ancient Rome," commander of a company of infantry, late 13c., from Latin centurionem (nominative centurio), "Roman army officer, head of a centuria" (a group of one hundred); see century.

century (n.)

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 "period of 100 years," reckoned from any starting point, is attested from 1650s, short for century of years (1620s). Latin centuria was not used in the sense "one hundred years," for which saeculum was the word (see secular). The older, general sense is preserved in the meaning "score of 100 points" in cricket and some other sports. The century-plant (American aloe), 1843, was believed to bloom only after a century of growth.

centennial (adj.)

"consisting of or lasting 100 years, happening every 100 years," 1789, from Latin centum "one hundred" (see hundred) + ending from biennial. As a noun, "a hundredth anniversary celebration," from 1876; the older noun is centenary.

cinquecento (n.)

also cinque-cento, "the sixteenth century" (in reference to Italian art and literature), 1760, from Italian cinquecento, literally "500," short for mil cinquecento "1500." See cinque + hundred, and compare quattrocento. Also as an adjective.

dean (n.)

early 14c., an ecclesiastical title, etymologically "head of a group of ten," from Old French deien (12c., Modern French doyen), from Late Latin decanus "head of a group of 10 monks in a monastery," from earlier secular meaning "commander of 10 soldiers" (which was extended to civil administrators in the late empire), from Greek dekanos, from deka "ten" (from PIE root *dekm- "ten"). It replaced Old English teoðingealdor.

Sense of "president of a faculty or department in a university" is by 1520s (in Anglo-Latin from late 13c.). Extended meaning "oldest member in length of service in any constituted body" is from mid-15c. Related: Deanery.