From the accusative singular of circus (“circle, ring”).
circum (not comparable)
- about, around
- in a circle, all around, on both sides
circum (+ accusative)
- about, around, near
- through, among, to
- nearby, at, in the neighborhood of
- “circum” in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879.
- Michiel de Vaan (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden, Boston: Brill Academic Publishers