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.
de·fen·sive circle (d -f n sv)n. The addition of a secondary disease that limits or arrests the progress of the primary disease, the two diseases exerting a reciprocally antagonistic action. |
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