circle

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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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]
Farlex Partner Medical Dictionary © Farlex 2012

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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
His friends had already formed a tight little circle of safety around him.
"Space heaters need space, so use them in a 3-foot circle of safety, free of anything that can catch fire.'' He added, "Space heaters are not designed to replace your central heating system, they are only designed to provide a little extra heat on a temporary basis.
Louisville, KY, December 21, 2014 --(PR.com)-- Air Hydro Power is honored to have earned the Parker Hannifin Corporation Circle of Safety (COS) National Platinum Award for fiscal year 2014.