circle

(redirected from 360 degrees)
Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.

circle

 [ser´k'l]
a round figure, structure, or part.
Berry's c's charts with circles on them for testing stereoscopic vision.
cerebral arterial circle circle of Willis.
Minsky's circle a device for the graphic recording of eye lesions.
sensory circle a body area within which it is impossible to distinguish separately the impressions arising from two sites of stimulation.
circle of Willis the anastomotic loop of blood vessels near the base of the brain. Called also cerebral arterial circle.

cir·cle

(ser'kĕl),
1. anatomy a ring-shaped or anular structure or group of structures, as formed by anastomosing arteries or veins, or by connected (communicating) nerves.
2. A line or process with every point approximately equidistant from the center.
Synonym(s): circulus [TA]
[L. circulus]

circle

/cir·cle/ (ser´k'l) a round structure or part.
cerebral arterial circle  c. of Willis.
Berry's circles  charts with circles on them for testing stereoscopic vision.
defensive circle  the coexistence of two conditions which tend to have an antagonistic or inhibiting effect on each other.
circle of Haller  a circle of arteries in the sclera at the site of the entrance of the optic nerve.
Minsky's circles  a series of circles used for the graphic recording of eye lesions.
circle of Willis  the anastomotic loop of vessels near the base of the brain.

circle

Etymology: L, circulus
(in anatomy) a circular or nearly circular structure of the body, such as the circle of Willis and circle of Zinn. circular, adj.

cir·cle

(sĭr'kĕl)
1. A ring-shaped structure or group of structures.
Synonym(s): circulus (1) [TA] .
2. A line or process with every point equidistant from the center.
[L. circulus]

cir·cle

(sĭr'kĕl)
anatomy ring-shaped or anular structure or group of structures, as formed by anastomosing arteries or veins, or by connected (communicating) nerves.
[L. circulus]

circle

a round figure, structure or part.

circle block
see ring block.
ciliary arterial circle
formed from the anterior ciliary arteries; lies within the ciliary muscle.
iridial arterial circle
formed from the posterior long ciliary arteries and supplying blood to the iris.
iridial vascular circle
a ring of vessels formed by the anterior ciliary arteries; provide fine branches to the iris and ciliary body.
circle of safety
circle system
see breathing circuit.
circle test
walking a horse in a small circle, first one direction then the other, is used in a neurological examination to detect ataxia and abnormalities in proprioception.
circle of Willis
anastomotic loop of vessels near the base of the brain. See cerebral arterial circle.
References in periodicals archive ?
Viewers can share, browse, and interact with 360 degree video at 360fly.
As the winner of the 360 Degrees Forward contest, Joe Riley will be awarded the use of Be Here's iVideo technology to create a film short that will debut in September on the Atom Web site.
The ParaCamera S-2 Surveillance System employs a unique, patent pending, optical system (using a curved mirror) to capture a round "donut shaped" 360 degrees view of the room.
based in New York City, was formed in early 1997 with a mission to define the emerging field of 360 degree digital video systems.
Spin's novel approach features a simple interface guiding users to "stitch" overlapping images together to create seamless panoramic pictures and 360 degrees panoramic QTVR movies.
To view a movie, the user merely clicks and drags the mouse over the panorama to "pan" the scene and experience the extraordinary sensation of spinning around in a virtual 360 degrees environment.
Modules are shown as 360 degree rotating 3D models and as diagrams with detailed descriptions that include country of origin, function and connectivity.
The contract includes the continued use of CBIS's CELLWARE(R) customer care and billing solution in an outsourcing environment, and provides the opportunity for 360 Degrees Communications to migrate to CBIS's UNIX-based, Precedent 2000(R) Business Management Solution in the future.