duumvirate

(do̵̅o̅ umvi rit, dyo̵̅o̅-)

noun

  1. governmental position or authority held jointly by two persons
  2. two such persons

Origin: L duumviratus: see duumvir & -ate

See duumvirate in American Heritage Dictionary 4

noun
  1. Any of various two-man executive boards in the Roman Republic.
  2. A regime or partnership of two persons.
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