A property of a component or system that is a function of the whole component, a property that changes if material is added or subtracted to the component

(game theory) Informally, a representation of a game as a tree of decision nodes, with the game beginning at a unique initial node, and flowing through the tree along a path determined by the players until a terminal node is reached, where play ends and payoffs are assigned to all players; each non-terminal node belongs to a player; that player chooses among the possible moves at that node, each possible move is an edge leading from that node to another node.

plural of extensive form game

A short series of text characters at the end of a computer filename, used to indicate the type of contents and the software that will be required to operate or open it.

(nautical) An attachment to the tiller that enables the helmsman to steer from further forward on the boat.

(electronics, US) An electrical cord with a plug one end, and a single socket or a multi-port socket at the other end, used for powering one or more devices at a distance, too far from the wall outlet to be reached by the normal cords of the device or devices.

A cable that can be used to extend a signal or power cable or move the connexion point for a signal or power source.

plural of extension cable

A length of hair which is attached to one's normal hair to make it longer.

plural of filename extension