Where does “circa” come from?

circa (Romanian) comes from Romanian circumscripție, from Latin circumscriptio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

circa (Romanian): approximately, about, or so

Definitions

approximately, about, or so

Ancestry of “circa”, step by step

circa traces back through two separate lines of ancestry.

via Romanian circumscripție

Step	Language	Word	Meaning
1	Romanian	circumscripție	district
2	Latin	circumscriptio	circle, circumference; boundary, outline,...
3	Latin	-tiō	tion, -ation, -ing
4	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
5	Latin	dissertus	arranged, disposed; explained
6	Latin	disserere	second-person singular future passive indicative...
7	Latin	dis-	asunder, apart, in two; reversal, removal;...
8	Latin	calceus	shoe
9	Latin	calx	limestone; chalk; the finish line
10	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

via Latin circā

Step	Language	Word	Meaning
1	Latin	circā	—
2	Ancient Greek	Κίρκη	Circe
3	Ancient Greek	-ή	suffix of feminine nouns in the [[Appendix:Ancient Greek first declension
4	Ancient Greek	-ᾱ	nominal suffix
5	Proto-Indo-European	-éh₂	—

Every word from Ancient Greek χάλιξ →Every word from Latin -tiō →Every word from Latin dis- →