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Study Dictionary
President
PRESIDENT [SMITH]
(sarac or sareca , only used (Daniel 6:1) ... the Chaldee equivalent for Hebrew shter , probably from sara , Zend. a "head"), a high officer in the Persian court, a chief, a president, used of the three highest ministers.PRESIDENT [ISBE]
PRESIDENT - prez'-i-dent (carakh): Used only in Dan 6:2-7. Probably a Persian derivative from sar, "head," and the Aramaic equivalent for Hebrew shoter. The meaning is self-evident and refers to the appointment of Daniel by Darius to be one of the three princes who had rule over the satraps of the empire.
Also see definition of "President" in Word Study