(aviation) A zone of indeterminism over a navigation beacon (such as a VOR), where the direction-finding ability of the receiver outputs a random direction as flying over the beacon results in no direction to the beacon, giving a spinning direction indicator display. Also refers to flying over a magnetic pole, and its effects on a magnetic compass.

(physics) A surface in materials such as graphene that exhibits unusual electron transport

An extension of a developing or regenerating neurite that is seeking its synaptic target

plural of cone wheat

A variety of wheat with a conical spike.

(aeronautics) A cone-shaped piece on the tail of a jet or aeroplane where exhaust escapes.

(transitive) To close (part of a road) by putting traffic cones around.

plural of cone shell

A member of the genus Conus.

A cone of canvas stretched on an elevated frame as a storm signal.