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decurion

American  
[dih-kyoor-ee-uhn] / dɪˈkyʊər i ən /

noun

Roman History.
  1. the head of a decury.

  2. a member of the senate of an ancient Roman colony or municipality.


decurion British  
/ dɪˈkjʊərɪən /

noun

  1. a local councillor

  2. the commander of a troop of ten cavalrymen

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of decurion

1350–1400; Middle English < Latin decuriōn- (stem of decuriō ), equivalent to decuri ( a ) a division of ten ( dec ( em ) ten + -uria -ure ) + -iōn- -ion