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exarch

noun

  1. a governor of an outlying province in the ancient Byzantine Empire
  2. the supreme head of the independent Orthodox Church of Bulgaria
  3. Eastern Orthodox Ch.
    1. Historical an archbishop or patriarch
    2. now, a bishop or other member of the clergy serving as a patriarch's deputy or legate

Related Forms:

adjective

Bot. having the primary xylem maturing from the outer part of a stem toward the center

See exarch in American Heritage Dictionary 4

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