exarch

exarch

1 [ek-sahrk]
noun
1.
Eastern Church.
a.
a patriarch's deputy.
b.
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:
1580–90; < Late Latin exarchus superintendent < Greek éxarchos overseer, leader, equivalent to ex- ex-3 + -archos -arch

exarchal, adjective
Dictionary.com Unabridged

exarch

2 [ek-sahrk]
adjective Botany.
(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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World English Dictionary
exarch1 (ˈɛksɑːk)
 
n
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
 
[C16: from Late Latin exarchus overseer, from Greek exarkhos, from exarkhein to take the lead, from arkhein to rule]
 
ex'archal1
 
adj

exarch2 (ˈɛksɑːk)
 
adj
botany endarch Compare mesarch (of a xylem strand) having the first-formed xylem external to that formed later
 
[C19: from ex-1 (outside) + Greek arkhē beginning, origin]

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