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exarch1

[ek-sahrk] /ˈɛk sɑrk/
noun
1.
Eastern Church.
  1. a patriarch's deputy.
  2. a title originally applied to a patriarch but later applied only to a bishop ranking below a patriarch and above a metropolitan.
2.
the ruler of a province in the Byzantine Empire.
Origin
1580-1590
1580-90; < Late Latin exarchus superintendent < Greek éxarchos overseer, leader, equivalent to ex- ex-3 + -archos -arch
Related forms
exarchal, adjective

exarch2

[ek-sahrk] /ˈɛk sɑrk/
adjective, Botany
1.
(of a primary xylem or root) developing from the center; having the youngest cells closest to the core.
Origin
1890-95; ex-2 + Greek archḗ beginning
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for exarch

exarch1

/ˈɛksɑːk/
noun
1.
the head of certain autonomous Orthodox Christian Churches, such as that of Bulgaria and Cyprus
2.
any of certain Eastern Orthodox bishops, lower in rank than a patriarch but higher than a metropolitan
3.
the governor of a province in the Byzantine Empire
Derived Forms
exarchal, adjective
Word Origin
C16: from Late Latin exarchus overseer, from Greek exarkhos, from exarkhein to take the lead, from arkhein to rule

exarch2

/ˈɛksɑːk/
adjective
1.
(botany) (of a xylem strand) having the first-formed xylem external to that formed later Compare endarch, mesarch
Word Origin
C19: from ex-1 (outside) + Greek arkhē beginning, origin
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
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