1. Type genus of the Anatidae.
5. A Russian river.
7. An amino acid that is found in the central nervous system.
11. Knock unconscious or senseless.
12. An informal term for a father.
13. (Babylonian) God of storms and wind.
14. Relating to or characteristic of or occurring in the air.
15. God of the earth.
16. A collection of facts from which conclusions may be drawn.
17. A soft silvery metallic element of the alkali earth group.
18. A rotating disk shaped to convert circular into linear motion.
20. The most common computer memory which can be used by programs to perform necessary tasks while the computer is on.
21. (Babylonian) A demigod or first man.
25. A radioactive element of the actinide series.
27. Having undesirable or negative qualities.
30. A software system that facilitates the creation and maintenance and use of an electronic database.
32. Imperial dynasty that ruled China (most of the time) from 206 BC to 221 and expanded its boundaries and developed its bureaucracy.
33. (British) A waterproof raincoat made of rubberized fabric.
36. An endorsement.
39. An intensely radioactive metallic element that occurs in minute amounts in uranium ores.
40. Mammary gland of bovids (cows and sheep and goats).
43. Of or relating to the stomach and intestines.
44. A woman hired to suckle a child of someone else.
47. Either extremity of something that has length.
49. A Chadic language spoken south of Lake Chad.
50. Experiencing or showing sorrow or unhappiness.
51. A flat wing-shaped process or winglike part of an organism.
1. Jordan's port.
2. Submerged aquatic plant having narrow leaves and small flowers.
3. A port in southwestern Scotland.
4. Conforming to truth.
5. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
6. A small cake leavened with yeast.
7. An anxiety disorder characterized by chronic free-floating anxiety and such symptoms as tension or sweating or trembling of light-headedness or irritability etc that has lasted for more than six months.
8. The sixth month of the civil year.
9. A Chadic language spoken south of Lake Chad.
10. (Old Testament) In Judeo-Christian mythology.
19. United States naval officer and historian (1840-1914).
22. A defensive missile designed to shoot down incoming intercontinental ballistic missiles.
23. An archaic name for Easter or Passover.
24. A public promotion of some product or service.
26. Feline mammal usually having thick soft fur and being unable to roar.
28. Large brownish-green New Zealand parrot.
29. A Tibetan or Mongolian priest of Lamaism.
31. British colonial financier and statesman in South Africa.
34. Wild sheep of semidesert regions in central Asia.
35. Tropical American trees with palmately compound leaves and showy bell-shaped flowers.
37. God of love and erotic desire.
38. A colorless and odorless inert gas.
41. A nucleic acid consisting of large molecules shaped like a double helix.
42. A doctor's degree in education.
45. The blood group whose red cells carry both the A and B antigens.
46. (astronomy) The angular distance of a celestial point measured westward along the celestial equator from the zenith crossing.
48. A white metallic element that burns with a brilliant light.