circulus

American  

[sur-kyuh-luhs] / ˈsɜr kyə ləs /

noun

plural

circuli

1. any of the concentric circles on each scale of a fish, each of which indicates the annual growth of that scale.

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Etymology

Origin of circulus

< Latin: circle

Example Sentences

The problem is that your argument is, as the Romans would say, circulus in probando.

From Slate • Oct. 7, 2015

The "circulus solis" of course signifies the corona.

From A Popular History of Astronomy During the Nineteenth Century Fourth Edition by Clerke, Agnes M. (Agnes Mary)

Islandia tribus gradibus in circulum    vsque Arcticum ab æquinoctiali    excurrit, adeò ferè, vt    mediam circulus ille secet, &c.

From The Principal Navigations, Voyages, Traffiques and Discoveries of the English Nation — Volume 01 by Hakluyt, Richard

"Vocatur etiam cyfra, quasi circumfacta vel circumferenda, quod idem est, quod circulus non habito respectu ad centrum."

From The Hindu-Arabic Numerals by Karpinski, Louis Charles

You see that you have been betrayed into a circulus vitiosus from which you can no longer escape.

From On the Cross A Romance of the Passion Play at Oberammergau by Hillern, Wilhelmine von