What is SI unit of mass how it is defined?

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Tags

1. #kilogram
2. #platinum
3. #particular
4. #defined
5. #water
6. #liter
7. #weights
8. #measures
9. #abbreviation
10. #international
11. #cubic
12. #bureau
13. #iridium
14. #prototype
15. #originally
16. #units
17. #meter