The zone near the equator where mixing occurs between the two tropical zones of the atmosphere.

(astrobiology, astronomy) the restricted zone around a sun where the ever shifting habitable zone is always present throughout the main sequence lifetime of that star.

(astrobiology, astronomy) the zone in a disk galaxy lying within the disk which is neither too far from the core so as to be lacking in heavier elements, nor too close to the core as to experience excessive exposures to supernovae, where intelligent life may develop

(physiology, neuroscience) An area of the medulla oblongata, located in the area postrema, that receives inputs from blood-borne drugs or hormones, and communicates with other structures in the vomiting center to initiate vomiting.

(programming) In JavaScript, the lines of code preceding the declaration of a variable.

(politics, US) An area set aside in public places for the purpose of protesting.

plural of neutral-zone infraction

(American football) an infraction in which a football player, on defense, gets into or crosses the neutral zone during the snap, causing an offensive player to false start. The penalty is against the defense, not the offense. It is a 5 yard penalty.

An area in which the local or regional authorities have banned nuclear weapons and nuclear power stations.

The temperate zone between the Arctic Circle and the Tropic of Cancer.