Meaning

1. order (arrangement, disposition)
2. order (the state of being well arranged)
3. order; command
4. order (group of religious adherents)
5. order (society of knights)
6. order (taxonomical rank)
7. peace; tranquility; harmony
8. order (number of elements in a set or related structure)
9. order (highest exponent in a polynomial)
10. classical order
11. sacrament which makes someone member of the clergy