 Circular

Circular is a basic geometric shape such as a Circle.
Contents
Circular may also refer to:
Documents
 Circular note, a document request by a bank to its foreign correspondents to pay a specified sum of money to a named person
 Flyer (pamphlet), sometimes referred to as a circular, is a notice sent out in large quantities
 Government circular, a written statement of government policy
 Circular letter (disambiguation), multiple meanings
 List of circulars, multiple documents
Travel and transportation
 Circular journey, an excursion in which the final destination is the same as the starting point
 Central Circular Route (Shuto Expressway), a route of the Shuto Expressway system serving the central part of the Greater Tokyo Area
 Circular Line (TRTS), a mediumcapacity rapid transit line in Taipei, Taiwan
 Crewe and Nantwich Circular Walk, a walking circuit around the towns of Crewe and Nantwich in Cheshire, England
 Inner Circular Route (Shuto Expressway), a route of the Shuto Expressway system serving the central part of the Greater Tokyo Area
 Karachi Circular Railway, a Mass Transport System for the city of Karachi, Sindh, Pakistan
 Kolkata Circular Railway, a railway line that encircles the entire city of Kolkata
 Yangon Circular Railway, the commuter rail network operated by Myanmar Railways that serves the Yangon metropolitan area
Places
 Circular Quay ferry wharf, the complex of the main commuter wharves in Circular Quay in Sydney, Australia
 Circular Quay railway station, a CityRail station located in Sydney, Australia and is situated on the City Circle line
 Circular Quay, a location in Sydney, Australia
 Penha Circular, a suburb in the north of Rio de Janeiro
 Ponte Pedonal Circular (Aveiro), a bridge in Portugal located in Aveiro District
 Circular Head Council, a Local Government Area of Tasmania
 Circular Kinopanorama a cinema in Moscow which plays a cinema presentation on a circular screen with a horizontal 360° view
Anatomy
 Circular fibers, also known as the Iris sphincter muscle, is a muscle in the part of the eye called the iris
 Circular folds, large valvular flaps projecting into the lumen of the bowel
 Circular sulcus of insula, a deep circular sulcus surrounds the insula
Archaeology
 Circular Congregational Church and Parish House, a church in Charleston, South Carolina
 Circular Congregational Church, a church located in Charleston, South Carolina that was founded in 1681
 Circular ditches, prehistoric arrangements known to archaeologists that are have been found in Germany, Austria and Slovakia, and the Czech Republic
Architecture
 Circular Tower, one of the three Azrieli center skyscrapers located in Tel Aviv, Israel
 Circular window, a feature of classical architecture since the 16th century
 Circular rampart, an embankment built in the shape of a circle
Biology
 Circular bacterial chromosome, the bacterial chromosome contained in a circular DNA molecule
 Circular crab, a mediumsized crab found in the Mediterranean Sea and other places
 Circular DNA, a form of DNA that is found in bacteria and archaea
 Circular saw shell, a large sea snail of the family Turbinidae
 Circular stingaree, is a species of fish in the Urolophidae family that is endemic to Australia
Computer sciences and programming
 Circular buffer, a data structure that uses a single, fixedsize buffer as if it were connected endtoend
 Circular convolution
 Circular dependency, in software engineering, a relation between two or more modules which either directly or indirectly depend on each other to function properly
 Circular list, a linked list in which all nodes are linked in a continuous circle without using null
 Circular wait, one of the conditions necessary for deadlock to occur
 Metacircular evaluator, a special case of a selfinterpreter in which the existing facilities of the parent interpreter are directly applied to the source code being interpreted
Geometry
 Circle, a basic geometric shape
 Circular algebraic curve, a type of plane algebraic curve
 Circular cone, a threedimensional geometric shape that tapers smoothly from a circular base to the apex
 Circular cylinder, a basic curvilinear geometric shapes
 Circular mil, a unit of area equal to the area of a circle with a diameter of one thousandth of an inch
 Circular paraboloid, an elliptic paraboloid
 Circular points at infinity, a term used in projective geometry
 Circular sector, is the portion of a circle enclosed by two radii and an arc
 Circular segment, the area of a circle which is "cut off" from the rest of the circle by a secant or a chord
 Circular surface, a term used in differential geometry
 Trigonometric functions, also called circular functions, are functions of an angle
Graph theory
 Circular coloring, a refinement of usual graph coloring
 Circular graph, a graph that consists of some number of vertices connected in a closed chain
 Circulararc graph, a circulararc graph is the intersection graph of a set of arcs on the circle
General Mathematics
 Circular coordinates, a twodimensional coordinate system in which each point on a plane is determined by a distance from a fixed point and an angle from a fixed direction
 Circular number, a number whose square "ends" in the same digits as number itself
 Circular ordering, a term used in combinatorial mathematics
 Circular permutation, a permutation built from one or more sets of elements in cyclic order
 Circular shift, in combinatorial mathematics, the operation of rearranging the entries in a tuple
 Mean of circular quantities, a mean of circular quantities
Philosophy
 Circular cause and consequence, a logical fallacy where the consequence of the phenomenon is claimed to be its root cause
 Circular definition, a definition that assumes a prior understanding of the term being defined
 Circular reasoning, a logical fallacy in which the proposition to be proved is assumed in one of the premises
 Circular reference, a series of references where the last object references the first, resulting in a closed loop
 Circular reporting, (also known as “false confirmation”), a situation where a piece of information appears to come from multiple independent sources, but in fact is coming from only one source
Physics
 Circular dichroism, refers to the differential absorption of left and right circularly polarized light
 Circular ensemble, in the theory of random matrices, it is a measures on spaces of unitary matrices
 Circular motion, a rotation along a circle
 Circular orbit, the orbit of any point of an object rotating around a fixed axis
 Circular polarization, a polarization where the tip of the electric field vector describes a circle as time progresses.
 Circular polarizer, used to create circularly polarized light
 Circular symmetry, in mathematical physics applies to a 2dimensional field which can be expressed as a function of distance from a central point only
 Circular wavenumber, in physical sciences, a property of a wave proportional to the reciprocal of the wavelength
 Uniform circular motion and Nonuniform circular motion, terms used to describe the motion of a body traversing a circular path
Statistics
 Circular normal distribution, in probability theory and directional statistics, a continuous probability distribution on the circle
 Circular uniform distribution, in probability theory and directional statistics, a probability distribution on the unit circle whose density is uniform for all angles
 Circular error probable, an intuitive measure of a weapon system's accuracy
Entertainment, fictional literature and music
 Circular (album), a studio album released by Spanish singer Vega in 2006
 Circular Reasoning Records, a sublabel of the independent record label Charnel Music
 Circular temperament, a type of tempered tuning described in 20thcentury music theory
 Circular Time, a British audio drama based on the longrunning science fiction television series Doctor Who
 The Circular Ruins, a fantasy short story by Argentine writer and poet Jorge Luis Borges
 Circular chain dance, also called a Circle dance, a style of traditional dance usually done in a circle without partners
Other
 Circular Head Football Association, an Australian rules football competition held in Tasmania, Australia
 Circular Quay (horse), a thoroughbred racehorse who was a 2007 Kentucky Derby contender
 Circular saw bench, a woodworking tool that consists of a circular saw blade, mounted on an arbor, that is driven by an electric motor
 Circular saw, a spinning tool with saw teeth used for cutting wood or other materials
 Circular transactions controversy, a 2008 Irish accounting scandal that triggered series of incidents which led to the eventual nationalisation of the Anglo Irish Bank
 Intermediate circular orbit, is the region of space around the Earth above low Earth orbit and below geostationary orbit
 Circular gear, a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque.
 Semicircular kick, a form of roundhouse kick used in kickboxing
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