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A chevron (also spelled cheveron, especially in older documents) is a V-shaped mark or symbol, often inverted. The word is usually used in reference to a kind of fret in architecture , or to a badge or insignia used in military or police uniforms to indicate rank or length of service, or in heraldry and the designs of flags (see flag terminology ).
Chevron (aerospace), sawtooth patterns on some jet engines; Chevron (anatomy), a bone; Eulithis testata, a moth; Chevron (geology), a fold in rock layers; Chevron (land form), a sediment deposit across the Earth's surface; Chevron nail, a rare transient fingernail ridge pattern seen in children; Chevron plot, a way of representing data
A chevron is a wedge-shaped sediment deposit observed on coastlines and continental interiors around the world. The term chevron was originally used independently by Maxwell and Haynes [ 1 ] and Hearty and others [ 2 ] for large, V-shaped, sub-linear to parabolic landforms in southwestern Egypt and on islands in the eastern, windward Bahamas.
Eurasian cranes in a V formation (video) Birds flying in V formation. A V formation is a symmetric V- or chevron-shaped flight formation.In nature, it occurs among geese, swans, ducks, and other migratory birds, improving their energy efficiency, while in human aviation, it is used mostly in military aviation, air shows, and occasionally commercial aviation.
In heraldry, the field (background) of a shield can be divided into more than one area, or subdivision, of different tinctures, usually following the lines of one of the ordinaries and carrying its name (e.g. a shield divided in the shape of a chevron is said to be parted "per chevron").
Chevron folds are a structural feature characterized by repeated well behaved folded beds with straight limbs and sharp hinges. Well developed, these folds develop repeated set of v-shaped beds. [ 1 ]
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The Vic was the basic flying formation adopted by every major air force. The French Air Force referred to it as the Chevron, and the Imperial German Army Air Service it was the Kette. It remained the standard formation throughout the interwar period and into the Second World War. The basic unit was the three-plane section in a Vic.