A member of a class of individuals that receive inferior treatment. / (programming, languages) Synonym of second-class object

plural of second-class value

(programming, languages) An entity of which the value can be passed as a parameter, but that can neither be returned from a function, nor be assigned to a variable. (Used by Raphael Finkel, the first-class object does not need to have run-time constructability according to his definition.)

(tennis) second serve

(aviation) The flight engineer of an aircraft.

plural of second-storey man

(physics) Alternative form of lumen second

(physics) A derived SI unit of luminous energy.

(surgery) An incision in the abdomen for surgery on any of the abdominal organs.

plural of second in command