Sorry, no online dictionaries contain the exact phrase underlying system.
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Reverse dictionary results:
1. framework
 2. infrastructure
3. foundation
4. basis
5. structure
6. base
7. base isolation
8. installed base
9. based
10. subbase
 11. substructure
12. basal
13. base on
14. baseline
15. basen
16. basing
17. foundation stone
18. fundament
19. grounds
20. groundwork
 21. base year
22. basic
23. base case
24. fundamental
25. foundational
26. fundamental unit
27. grounding
28. parter
29. rootstock
30. secondary accent
 31. chapter
32. funda
33. grade
34. ground
35. ground zero
36. order
37. scope

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