1. Relative biological effectiveness, abbr.
4. Type genus of the Gliridae
8. Millisecond
12. ___ of corn
13. Accounting inventory system
14. Trees or shrubs having winged fruit
15. In a way, energized
17. Covered with or tinged with gold or a golden color
18. Live in
19. Adventure story
21. Body fluids
23. Rounds of duty
26. Small; for travel on water
29. Something added to enhance food or gasoline or paint or medicine
31. Select
32. Attila
33. Former OSS
34. Any of numerous small slender long-tailed parrots
36. Villains
37. Fortify
38. Soul and calypso song
40. Site of the famous Leaning Tower
42. Athapaskan language
46. Jacob __, American journalist
48. A priori
50. An inflammatory disease involving the oil glands of the skin
51. Unit of weight used in some Mediterranean countries
52. Leaf or strip from a leaf of the talipot palm
53. These (old English)
54. Days
55. More (Spanish)
2. Affliction
3. Greek goddess of discord
4. In a forest, open space
5. Knowledgeable
6. Nigerian City
7. Turfs
8. Grub
9. Neuralgia along the sciatic nerve
10. Fish
11. Cathode-ray tube
20. Plant part
22. Wood-chopping tools
24. Enthusiastic
25. Oceans
26. Smacks
27. Malacopterygian
28. Extracted from the nightshade family
30. Explode
32. Supplements with difficulty
36. Rodent
39. Visits
41. Swiss river
43. Material
44. Fissures
45. Sorrels
46. Radioactivity unit
47. Water in the solid state
49. Calendar month