Where does “circum-” come from?

circum- (Latin) comes from Latin circum, from Latin circus, from Ancient Greek κρίκος, from Proto-Indo-European (s)ḱer- — dung, manure, filth; manure, dung, filth.

circum- (Latin): circum-

Definitions

circum-

Ancestry of “circum-”, step by step

Step	Language	Word	Meaning
1	Latin	circum	about, around; in a circle, all around, on both...
2	Latin	circus	a circular line or orbit; circle, ring; a...
3	Ancient Greek	κρίκος	ring
4	Proto-Indo-European	(s)ḱer-	dung, manure, filth; manure, dung, filth

Words derived from “circum-”

circuit
circumstance
circumference
circumcision
circumstantial
circuitry
circuitous
circumspect
circumspection
circumvention
circumscribe
circumlocution
circumflex
circumnavigation
circumstantially
circumspectly
circumpolar
circumscription
circumcise
circumnavigate
uncircumcision
circuitously
circumambulation
circumstellar

Every word from Proto-Indo-European (s)ḱer- →

circum- — Etymology, Origin & Word History | Etymology Explorer