OFFICEHOLDER
incumbent, officeholder
(noun) the official who holds an office
officeholder, officer
(noun) someone who is appointed or elected to an office and who holds a position of trust; “he is an officer of the court”; “the club elected its officers for the coming year”
Source: WordNet® 3.1
Etymology
Noun
officeholder (plural officeholders)
A person who holds an office, especially one appointed or elected to a public office; an incumbent
Source: Wiktionary
Of"fice*hold"er, n.
Definition: An officer, particularly one in the civil service; a placeman.
Source: Webster’s Unabridged Dictionary 1913 Edition