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Decade  A Period A/The From   Of Dictionary Sense

Title decade
Text
Merriam-Webster's Collegiate Dictionary
de·cade

 \\ˈde-ˌkād, de-ˈkād; especially sense 1b ˈde-kəd\\ noun
 ETYMOLOGY  Middle English, from Middle French décade, from Late Latin decad-, decas, from Greek dekad-, dekas, from deka
 DATE  15th century
1. a group or set of 10: as
  a. a period of 10 years
  b. a division of the rosary that consists primarily of 10 Hail Marys
2. a ratio of 10 to 1 : order of magnitude
• de·cad·al 
 \\ˈde-kə-dəl\\ adjective
English Etymology
decade
  mid-15c., "ten parts" (of anything; originally in ref. to the books of Livy), from 
M.Fr
http://M.Fr
. decade, from L.L. decadem (nom. decas), from Gk. dekas (acc. dekada) "group of ten." Meaning "ten years" is 1590s in English.
Oxford Advanced Learner's Dictionary-牛津双解-OALD7
 decade
dec·ade 5dekeiddi5keid / noun   a period of two years, especially a period such as 1910–1919 or 1990–1999
   十年,十年期(尤指一个年代)
Oxford Collocations Dictionary for Students of English
Oxford Collocations dictionary for students of English


decade 
noun 
ADJ. present | coming, following, next | last, past, preceding, previous, recent 

DECADE + VERB elapse, go by, pass This decade has passed uneventfully. | begin, open, start This decade began badly for us. | close, end | see sth The past decade has seen a huge rise in the number of computer owners. 

PREP. during a/the ~, for a/the ~, in a/the ~, over a/the ~, throughout a/the ~, within a/the ~

OLT
decade noun
 period
Webster's Third New International Dictionary, Unabridged
dec·ade
\ˈdeˌkād also deˈkād or də̇ˈkād or ˈdekə̇d; the last is most frequent in the sense “division of a rosary” and many who first learned the word in this sense use this pronunciation for all senses; since d and t are identically pronounced in certain intervocalic environments by most U S speakers, some who first learn the word aurally in a context such as “decade of the rosary” originally apprehend the last consonant letter as t and pronounce the word in all its occurrences as if the last consonant letter were t, making the plural for instance ˈdekə̇ts\ noun
(-s)
Etymology: Middle English, from Middle French décade, from Late Latin decad-, decas, from Greek dekad-, dekas, from deka
1. 
 a. : a group or set of 10
  < his prisoners were divided into decades — William Godwin >
  < a decade of days >
  < a decade of proposals >
  < the fourth decade in a history >
 b. : a period of any 10 years
  < to last for a decade >
 especially : a 10-year period beginning with a year ending in 0 (as 1900-1909)
  < the decade of the twenties runs from January 1, 1920 to December 31, 1929 >
 c. : one of the periods of a century divided in 10 calendric parts each beginning with a year ending in 1 (as 1901-10)
  < the third decade of the century runs from January 1, 1921 to December 31, 1930 >
 d. : a division of the rosary usually consisting of one Our Father and 10 Hail Marys followed by the minor doxology; also : one of the sets of rosary beads used to count these prayers and usually consisting of one large bead and 10 small beads
2. 
 a. : a ratio of 10 to 1 (as in the geometric progression 1, 10, 100, 1000 …)
 b. : any one of the steps between sets of coils in a resistance box each coil of which has a resistance 10 times that of the corresponding coil in the preceding set

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