exarch adjective. ['ɛksɑ:k] L19.
[from EX-² + Greek arkhē beginning, origin.]
Botany. Of xylem or its development: formed or occurring from the periphery of a stem towards the centre.

[TahlilGaran] English Dictionary ▲

exarch noun. ['ɛksɑ:k] L16.
[ecclesiastical Latin exarchus from Greek exarkhos leader, chief, formed as EX-²: see -ARCH.]
1. Hist. A governor or vicegerent of a distant province under the Byzantine emperors. L16.

2. In the Orthodox Church: any of certain bishops next in rank below a patriarch, with oversight of a province and (now or formerly) jurisdiction over a metropolitan; a primate of an autocephalous Church; a bishop appointed as a patriarch's representative in a distant part. L16.

■ Exarchist noun (Hist.) a supporter of the Exarch of Bulgaria against the Patriarch of Constantinople during the schism of 1872-1945 E20.

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