noun, plural cir·cu·li [-lahy] /-ˌlaɪ/.
any of the concentric circles on each scale of a fish, each of which indicates the annual growth of that scale.
Origin of circulus
< Latin: circle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for circuli
Historical Examples of circuli
Problemata Physica, una cum magnitudine Circuli, London 1662, 4to.The Lives of the Poets of Great Britain and Ireland (1753)
n. pl. cir•cu•li (-lī′)
A ringlike or circular structure.
A circle formed by connecting arteries, veins, or nerves.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.