| circa definitions |
| # | Definition | Sets |
| 1 | about | 25 sets |
| 2 | around | 22 sets |
| 3 | approximately | 12 sets |
| 4 | about; at an estimated historical time period | 7 sets |
| 5 | "around that time." usually abbreviated "ca" or "c." | 5 sets |
| 6 | at an estimated historical time period, about | 5 sets |
| 7 | a latin word, often abbreviated "c." that means "about" or "around" | 5 sets |
| 8 | around, about | 4 sets |
| 9 | in the area of, about, concerning | 4 sets |
| 10 | ungefähr | 4 sets |
| 11 | a latin word often abbreveated "c" that means "about" or "around" | 3 sets |
| 12 | about; around | 3 sets |
| 13 | about, approximately | 3 sets |
| 14 | about (approximately :c) | 2 sets |
| 15 | about; approximently | 2 sets |
| 16 | the biological clocks can have somewhat different periods compared with the geophysical cycles, so their names begin with 'circa' which means 'about'. circa is used to describe endogenous rhythms that either fall short of or exceed the geophysical cycle. for example, circadian means about a day and describes an endogenous activity period that falls short of or exceeds a 24-hour period. | 2 sets |
| 17 | in approximately; about; around(time) | 2 sets |
| 18 | near | 2 sets |
| 19 | approximate date | 2 sets |
| 20 | means "about" | 2 sets |
| 21 | about a certain time | 2 sets |
| 22 | a latin word, often abbreviated "c" that means "about" or "around" | 2 sets |
| 23 | abbreviated ca | 1 set |
| 24 | prep. + acc. around. | 1 set |
| 25 | about or around | 1 set |
| 26 | approximately or about | 1 set |
| 27 | around or about in time | 1 set |
| 28 | l (preposition) about | 1 set |
| 29 | about (c.). | 1 set |
| 30 | often abbreviated c., ca., ca or cca. and sometimes italicized to show it is latin) literally means "about" or "around". | 1 set |
| 31 | one or more elemnts in a metalic mix | 1 set |
| 32 | "about" or "approximately" | 1 set |
| 33 | at an estimated historical time | 1 set |
| 34 | around, approx. | 1 set |
| 35 | kb | 1 set |
| 36 | ca. (approximately) | 1 set |
| 37 | zirka, ungefähr | 1 set |
| 38 | latin word meaning "about" or "around" | 1 set |
| 39 | adv: about, at an estimated historical time period | 1 set |
| 40 | approximately, about, around | 1 set |