operator
nounOne who operates a machine or device.
nounThe owner or manager of a business.
nounA military person who executes a special operation.
nounA person who is adept at accomplishing goals through shrewd or unscrupulous maneuvers.
nounA function, especially one from a set to itself, such as differentiation of a differentiable function or rotation of a vector.
nounA logical operator.
nounA chromosomal segment of DNA that regulates the activity of the structural genes of an operon by interacting with a specific repressor.
nounOne who conducts a business, as mining; a capitalist who carries on a business: opposed to operative.
nounOne who operates in any way, or on or against anything.