1. loop
2. ellipse
3. conic section
4. horizon
5. disk
6. great circle
7. geosynchronous orbit
8. cone
9. parabola
10. disc
11. ring
12. equator
13. circle
14. ellipsoid
15. spiral
16. router
17. conic
18. banding plane
19. roll
20. hyperbola
21. radian
22. discoid
23. oval
24. absolute
25. fence
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26. geostationary orbit
27. oersted
28. right circular cone
29. subcontrary
30. cylindrical coordinate system
31. vertical
32. orbicular
33. planisphere
34. segment
35. semicircle
36. sector
37. ecliptic
38. coin
39. oblong
40. cycloid
41. small circle
42. round
43. spokeshave
44. cylinder
45. turntable
46. hemicycle
47. bore
48. annulus
49. simple machine
50. folder
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51. celestial equator
52. trochoid
53. astrolabe
54. discoidal
55. disklike
56. kiss curl
57. plate
58. tangent
59. kepi
60. cymbal
61. amphitheatre
62. cam
63. saw
64. saucer
65. grindstone
66. lune
67. circular saw
68. aspect
69. punch
70. geodesic
71. crown glass
72. bezant
73. spur gear
74. cheese
75. petri dish
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76. almucantar
77. glider
78. gyroidal
79. kneecap
80. spur wheel
81. puncher
82. guitar
83. peaked cap
84. porkpie
85. prothallium
86. sand dollar
87. service cap
88. wheel-shaped
89. yachting cap
90. sandwich compound
91. musculus sphincter ani internus
92. radial saw
93. rad
94. celestial horizon
95. declination
96. gyroscope
97. mandrel or mandril
98. crown wheel
99. latitude
100. mig
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