| ACROSS
1. A detailed description of design criteria for a piece of work.
5. An informal term for a father.
7. In bed.
11. Rock that in its molten form (as magma) issues from volcanos.
12. A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal.
13. The arch of bone beneath the eye that forms the prominence of the cheek.
14. Norwegian mathematician (1802-1829).
15. A rotating disk shaped to convert circular into linear motion.
17. A rapid escape (as by criminals).
18. The capital of Bahrain.
20. (Irish) Mother of the ancient Irish gods.
21. Date used in reckoning dates before the supposed year Christ was born.
22. A doctor's degree in dental surgery.
23. A Chadic language spoken south of Lake Chad.
30. Aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar.
32. A compartment in front of a motor vehicle where driver sits.
33. The United Nations agency concerned with civil aviation.
36. A unit of magnetomotive force equal to 0.7958 ampere-turns.
38. The blood group whose red cells carry both the A and B antigens.
43. A river in north central Switzerland that runs northeast into the Rhine.
45. A small cake leavened with yeast.
48. Aromatic bulb used as seasoning.
49. The 7th letter of the Greek alphabet.
50. A defensive missile designed to shoot down incoming intercontinental ballistic missiles.
52. An associate degree in applied science.
53. Any of various dark heavy viscid substances obtained as a residue.
54. An informal term for a father.
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DOWN
1. Winning all or all but one of the tricks in bridge.
2. A metabolic acid found in yeast and liver cells.
3. Divisible by two.
4. West Indian tree having racemes of fragrant white flowers and yielding a durable timber and resinous juice.
5. Large burrowing rodent of South and Central America.
6. Title for a civil or military leader (especially in Turkey).
7. Before noon.
8. A pale rose-colored variety of the ruby spinel.
9. A feeling of strong eagerness (usually in favor of a person or cause).
10. Fallow deer.
16. Transmissions that are disseminated widely to the public.
19. One million periods per second.
24. A radioactive element of the actinide series.
25. The Tibeto-Burman language spoken in the Dali region of Yunnan.
26. The United Nations agency concerned with the international organization of food and agriculture.
27. A small pellet fired from an air rifle or BB gun.
28. An official prosecutor for a judicial district.
29. A logarithmic unit of sound intensity.
31. A midnight meeting of witches to practice witchcraft and sorcery.
34. A white metallic element that burns with a brilliant light.
35. A soft silvery metallic element of the alkali earth group.
37. A Chadic language spoken south of Lake Chad.
39. Unknown god.
40. An informal term for a father.
41. Having sections or patches colored differently and usually brightly.
42. Type genus of the Alcidae comprising solely the razorbill.
44. The network in the reticular formation that serves an alerting or arousal function.
45. A workplace for the conduct of scientific research.
46. A loose sleeveless outer garment made from aba cloth.
47. The rate at which heat is produced by an individual in a resting state.
51. A doctor's degree in optometry.
52. A very poisonous metallic element that has three allotropic forms.
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