An example of circa is the estimated date on an antique desk at a museum.
Origin of circaClassical Latin
prepositionAbbr. c. or ca
Origin of circaLatin circ&amacron;, from circum, around (probably on the model of adverbs like intr&amacron;, within), from circus, circle; see circle.
- Used only before a date or measure, never after
From Latin circa.