
1) Social theory
Found on
https://www.crosswordclues.com/clue/circulus

Circulus are a psychedelic folk/progressive rock band from South London, England, founded by vocalist Michael Tyack. The band uses a mix of modern and medieval instruments, such as the lute, cittern, crumhorn and rauschpfeife, along with the moog synthesizer, bass and electric guitars. Tyack claims to believe in fairies and pixies, and they have b...
Found on
http://en.wikipedia.org/wiki/Circulus
[gastropod] clade Hypsogastropoda clade Littorinimorpha | superfamilia = Truncatelloidea | familia = Tornidae | genus = Circulus | genus_authority = Jeffreys, 1865 | subdivision_ranks = Species | subdivision = See text | synonyms_ref = | synonyms = Circulus is a genus of very small and minute sea snails with an operculum, marine gastropod m...
Found on
http://en.wikipedia.org/wiki/Circulus_(gastropod)
[zoology] A circulus is a rarely occurring reptilian social group where there is interaction and personal exchange between individuals. Members will often protect and defend young, even if not of direct genetic linkage. Circulus is a Latin based term; one definition of the word is `a social gathering or circle company`.Andrews,E.A; 1875. La...
Found on
http://en.wikipedia.org/wiki/Circulus_(zoology)

1. Any ringlike structure. ... 2. A circle formed by connecting arteries, veins, or nerves. ... Origin: L. Dim. Of circus, circle ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: ser′kyū-lŭs, -lī Definitions: 1. A circle formed by connecting arteries, veins, or nerves. Synonyms: circle
Found on
http://www.medilexicon.com/medicaldictionary.php?t=17770

any of the concentric circles on each scale of a fish, each of which indicates the annual growth of that scale.
Found on
https://www.infoplease.com/dictionary/circulus
No exact match found.