The space the length of a ball between the two scrimmage lines. The offensive team and defensive team must remain behind their end of the ball. Exception: The offensive player who snaps the ball.
The area between the two blue lines. The center area of the playing surface.
the region between the line of scrimmage and a parallel line, one football length away, that both teams must stay out of before the ball is snapped. The exception to this is the center (or, more accurately in punting or field goal situations, the long snapper) of the offensive team who can place his hands on the ball to snap it and initiate play. The penalty for violation is called offsides and can be called on either side. Defensive players can enter the neutral zone so long as they are out of it before the ball is snapped. Occasionally, the offensive team will line up with the sole intention of trying to draw the defense offsides, usually on fourth down when tension is high. The quarterback can change tone or volume of voice or go to a longer snap count to achieve this result. Perhaps the master of this technique was John Elway.
The center third of the playing area.
the region between the lines of scrimmage or between the free kick restraining lines
the region that contains the ball as it sits on the ground before each play; the area between the two lines of scrimmage.
The area between the two blue-lines. On an Olympic ice surface, this area is 30 metres by 90m.
the area at the line of scrimmage, between the opposing players and the ball
One of the three areas of the ice surface, the zone located between the two blue lines.
The area between the offensive and defensive lines at the line of scrimmage. Teams must remain behind the neutral zone prior to the ball being snapped.
the region between the line of scrimmage and a parallel line some specified distance away from the line of scrimmage that the defensive team must stay out of before the ball is snapped.
The area contained between the blue lines.
The central ice area between the two blue lines (neither the defending nor the attacking zone).
The area of the field between the offense and defense when both are lined up read for the snap of the ball. Defined as the length of the football.
In the fictional Star Trek universe, a neutral zone is a sort of "buffer zone" between the territories of two different powers. If either party enters a neutral zone it is an aggressive move and is usually considered an act of war. The Federation has had two neutral zones: one with the Klingon Empire and one with the Romulan Star Empire.
In American football, the neutral zone can be described as the length of the football from one tip to the other when it is spotted (i.e. placed on a certain spot) on the field prior to the start of the next play. No member of either team, other than the center, may be "inside" the neutral zone when the ball is snapped or a penalty will be called.
When a controller operates in discontinuous mode around a setpoint (for example turning an airconditioner on above a certain room temperature and turning it off below that temperature) there can be frequent undesirable oscillations between on and off (sometimes referred to as 'chatter') when the variable is close to the setpoint. To solve this problem a neutral zone can be implemented between two set points (high and low) with the controller taking no action as long as the temperature is in the neutral zone. According to Curtis (see Reference below) "The existence of such a Neutral Zone is an example of desirable hysteresis in a system."