| ACROSS
1. The act of scanning.
5. A bachelor's degree in science.
7. United States labor organizer who ran for President as a socialist (1855-1926).
11. A Chadic language spoken south of Lake Chad.
12. A highly unstable radioactive element (the heaviest of the halogen series).
13. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
14. Large sweet juicy hybrid between tangerine and grapefruit having a thick wrinkled skin.
15. A silvery soft waxy metallic element of the alkali metal group.
16. An informal term for a father.
17. A brittle gray crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors.
18. The capital and largest city of Ghana with a deep-water port.
21. The blood group whose red cells carry both the A and B antigens.
22. The longer of the two telegraphic signals used in Morse code.
23. The cry made by sheep.
26. A compartment in front of a motor vehicle where driver sits.
29. A unit of dry measure used in Egypt.
30. Any culture medium that uses agar as the gelling agent.
34. Mar or spoil the appearance of.
38. (Akkadian) God of wisdom.
40. A river in north central Switzerland that runs northeast into the Rhine.
41. Open-heart surgery in which the rib cage is opened and a section of a blood vessel is grafted from the aorta to the coronary artery to bypass the blocked section of the coronary artery and improve the blood supply to the heart.
43. Any of a number of fishes of the family Carangidae.
45. A plant hormone promoting elongation of stems and roots.
48. Being two more than fifty.
49. A nucleotide derived from adenosine that occurs in muscle tissue.
51. A graphical record of electrical activity of the brain.
52. The act of using.
53. Type genus of the Anatidae.
54. A unit of pressure.
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DOWN
1. Marked by excessive complacency or self-satisfaction.
2. An enclosure made or wire or metal bars in which birds or animals are kept.
3. A federation of North American labor unions that merged with the Congress of Industrial Organizations in 1955.
4. Submerged aquatic plant having narrow leaves and small flowers.
5. (law) The seat for judges in a courtroom.
6. Indicating the most important performer or role.
7. The federal department responsible for safeguarding national security.
8. A federal agency established to coordinate programs aimed at reducing pollution and protecting the environment.
9. English monk and scholar (672-735).
10. Someone who works (or provides workers) during a strike.
19. Someone who is morally reprehensible.
20. Lower in esteem.
24. A constellation in the southern hemisphere near Telescopium and Norma.
25. A public promotion of some product or service.
27. A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal.
28. Having undesirable or negative qualities.
31. Having been read.
32. Of or relating to or venerating the Virgin Mary.
33. A radioactive element of the actinide series.
35. The syllable naming the fourth (subdominant) note of the diatonic scale in solmization.
36. True firs.
37. Any of a group of heavenly spirits under the god Anu.
39. A book of the New Testament.
40. A state in southeastern United States between the Atlantic and the Gulf of Mexico.
42. A city in northwestern Syria.
44. Any of various primates with short tails or no tail at all.
46. A loose sleeveless outer garment made from aba cloth.
47. An associate degree in applied science.
50. A soft silvery metallic element of the alkali earth group.
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