1. (Norse mythology) Wife of Thor and guardian of the home.
4. Harsh or corrosive in tone.
8. System of measurement based on centimeters and grams and seconds.
11. A constellation in the southern hemisphere near Telescopium and Norma.
12. God of love and erotic desire.
13. (British) A waterproof raincoat made of rubberized fabric.
14. A small cake leavened with yeast.
16. A workplace for the conduct of scientific research.
17. (Akkadian) God of wisdom.
18. An associate degree in nursing.
19. Before noon.
24. The blood group whose red cells carry both the A and B antigens.
25. Title for a civil or military leader (especially in Turkey).
27. Resinlike substance secreted by certain lac insects.
31. English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (1902-1984).
33. A highly unstable radioactive element (the heaviest of the halogen series).
36. A white metallic element that burns with a brilliant light.
37. A soft silvery metallic element of the alkali earth group.
38. Not only so, but.
42. The protoplasm of the germ cells that contains chromosomes and genes.
45. A river in northern England that flows southeast through West Yorkshire.
46. A disease of poultry.
48. Aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar.
49. A vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen.
51. United States liquid unit equal to 4 quarts or 3.785 liters.
52. Serving as an essential component.
53. The act of scanning.
54. A loose sleeveless outer garment made from aba cloth.

1. A island in the Netherlands Antilles that is the top of an extinct volcano.
2. A theocratic republic in the Middle East in western Asia.
3. Extremely pleasing.
4. A state in northwestern North America.
5. West Indian tree having racemes of fragrant white flowers and yielding a durable timber and resinous juice.
6. (Islam) The man who leads prayers in a mosque.
7. A light touch or stroke.
8. A metric unit of length equal to one hundredth of a meter.
9. (Greek mythology) Goddess of the earth and mother of Cronus and the Titans in ancient mythology.
10. Singing jazz.
15. Hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus.
20. Light informal conversation for social occasions.
21. A hemoprotein composed of globin and heme that gives red blood cells their characteristic color.
22. A river in north central Switzerland that runs northeast into the Rhine.
23. Type genus of the Alcidae comprising solely the razorbill.
26. Of or relating to the stomach and intestines.
28. A compartment in front of a motor vehicle where driver sits.
29. An official prosecutor for a judicial district.
30. A bachelor's degree in religion.
32. A dull persistent (usually moderately intense) pain.
34. United States abolitionist (1786-1865).
35. A Bantu language spoken by the Chaga people in northern Tanzania.
39. A republic consisting of 26 of 32 counties comprising the island of Ireland.
40. Showily imitative of art or artists.
41. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
42. A member of a Mayan people of southwestern Guatemala.
43. Someone who works (or provides workers) during a strike.
44. The arch of bone beneath the eye that forms the prominence of the cheek.
47. An agency of the United Nations affiliated with the World Bank.
50. A bachelor's degree in science.
51. A loose sleeveless outer garment made from aba cloth.