- 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. 2018
Examples from the Web for circuli
Problemata Physica, una cum magnitudine Circuli, London 1662, 4to.The Lives of the Poets of Great Britain and Ireland (1753)
- 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.