What does circle with arrow mean?

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Tags

1. #depiction
2. #representing
3. #represent
4. #introduced
5. #pointing
6. #zoology
7. #1750s
8. #alongside
9. #right
10. #following
11. #botany
12. #female
13. #astrological
14. #arrow
15. #circle
16. #convention
17. #angle
18. #emerging
19. #linnaeus
20. #venus
21. #symbol
22. #upper