one who holds public office; an official or employee of the government.

plural of commissioned officer

A person of authority in the military who has not received a commission (a direct conveyance of authority from the sovereign government); as such they can have charge or control but not command in the most technical use of the word.

plural of warrant officer

An officer enforcing customs laws.

plural of police officer

(nautical) The person, on board ship, who sends and receives radio messages

plural of flag officer

A (para)military commissioned officer who holds a field grade, ranking under general officers but above lower grades and fit to command medium-size units on the field, such as a battalion or regiment; or a non-army equivalent in rank.

plural of staff officer