1. Perennial herb of East India to Polynesia and Australia cultivated for its large edible root yielding Otaheite arrowroot starch.
4. A master's degree in library science.
8. The compass point that is one point south of due east.
11. Consisting of or made of wood of the oak tree.
12. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
13. Resinlike substance secreted by certain lac insects.
14. An accidental hole that allows something (fluid or light etc.) to enter or escape.
16. An independent agency of the United States government responsible for collecting and coordinating intelligence and counterintelligence activities abroad in the national interest.
17. A master's degree in business.
18. A brief description given for purposes of identification.
20. 1/10 gram.
22. Before noon.
23. In bed.
24. An expression of greeting.
26. Date used in reckoning dates before the supposed year Christ was born.
28. A public promotion of some product or service.
32. A silvery ductile metallic element found primarily in bauxite.
33. (Akkadian) God of wisdom.
34. (Judaism) Sacred chest where the ancient Hebrews kept the two tablets containing the Ten Commandments.
37. An intensely radioactive metallic element that occurs in minute amounts in uranium ores.
39. A high-crowned black cap (usually made of felt or sheepskin) worn by men in Turkey and Iran and the Caucasus.
42. A metrical unit with unstressed-stressed syllables.
46. Wild sheep of northern Africa.
48. The cry made by sheep.
49. United States chemist who discovered deuterium (1893-1981).
52. A narrow way or road.
53. A white metallic element that burns with a brilliant light.
54. Scottish philosopher of common sense who opposed the ideas of David Hume (1710-1796).

1. An inquiry into public opinion conducted by interviewing a random sample of people.
2. The United Nations agency concerned with atomic energy.
3. Jordan's port.
4. A polyvalent metallic element that resembles chromium and tungsten in its properties.
5. A drug combination found in some over-the-counter headache remedies (Aspirin and Phenacetin and Caffeine).
6. Flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes.
7. Any of a number of fishes of the family Carangidae.
8. Any of various trees of the genus Ulmus.
9. A small cake leavened with yeast.
10. A fraudulent business scheme.
15. Cubes of meat marinated and cooked on a skewer usually with vegetables.
19. Having leadership guidance.
21. Military headquarters from which a military commander controls and organizes the forces.
25. A plant hormone promoting elongation of stems and roots.
27. Being ten more than one hundred forty.
29. A river in north central Switzerland that runs northeast into the Rhine.
30. A nonmetallic largely pentavalent heavy volatile corrosive dark brown liquid element belonging to the halogens.
31. A state in northwestern North America.
35. Of time long past.
36. An interest followed with exaggerated zeal.
38. The branch of computer science that deal with writing computer programs that can solve problems creatively.
40. A sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure.
41. The British system of withholding tax.
43. A French abbot.
44. Any of a group of antidepressant drugs that inhibit the action of monoamine oxidase in the brain and so allow monoamines to accumulate.
45. A lyric poet.
47. A loose sleeveless outer garment made from aba cloth.
48. A public promotion of some product or service.
50. A radioactive element of the actinide series.
51. A colorless and odorless inert gas.