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circulus
circulus[′sər·kyə·ləs] (biology) Any of various ringlike structures, such as the vascular circle of Willis or the concentric ridges on fish scales. circulus
cir·cu·lus, gen. and pl. cir·cu·li (ser'kyū-lŭs, -lī), [TA] 2. A circle formed by connecting arteries, veins, or nerves. [L. dim. of circus, circle] cir·cu·lus, gen. and pl. circuli (sĭr'kū-lŭs, -lī) [TA] 1. Synonym(s): circle (1) . 2. A circle formed by connecting arteries, veins, or nerves. [L. dim. of circus, circle] |