1. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
5. A master's degree in business.
8. System of measurement based on centimeters and grams and seconds.
11. Made of fir or pine.
12. At a great distance in time or space or degree.
13. Resinlike substance secreted by certain lac insects.
14. An Iranian language spoken in Afghanistan.
15. How long something has existed.
16. One of the most common of the five major classes of immunoglobulins.
17. A silvery malleable metallic element that resists corrosion.
18. A unit of information equal to one million (1,048,576) bytes.
20. A light touch or stroke.
22. A public promotion of some product or service.
23. A Chadic language spoken south of Lake Chad.
25. The blood group whose red cells carry both the A and B antigens.
27. (informal) Of the highest quality.
30. Having undesirable or negative qualities.
31. A metrical unit with unstressed-stressed syllables.
34. An alloy of copper and zinc (and sometimes arsenic) used to imitate gold in cheap jewelry and for gilding.
37. A compartment in front of a motor vehicle where driver sits.
38. The syllable naming the fourth (subdominant) note of the diatonic scale in solmization.
39. A logarithmic unit of sound intensity.
41. A radioactive element of the actinide series.
43. Any of numerous local fertility and nature deities worshipped by ancient Semitic peoples.
46. A river in north central Switzerland that runs northeast into the Rhine.
48. An officer who acts as military assistant to a more senior officer.
52. (astronomy) The angular distance of a celestial point measured westward along the celestial equator from the zenith crossing.
53. Type genus of the family Myacidae.
54. Anything that serves as an enticement.
56. An associate degree in applied science.
57. (Greek mythology) Goddess of the earth and mother of Cronus and the Titans in ancient mythology.
58. A loose sleeveless outer garment made from aba cloth.

1. The probability of a specified outcome.
2. A hymn of praise (especially one sung in ancient Greece to invoke or thank a deity).
3. The sense organ for hearing and equilibrium.
4. An upward slope or grade (as in a road).
5. A master's degree in fine arts.
6. Capital and largest city of Iraq.
7. A particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography).
8. A user interface in which you type commands instead of choosing them from a menu or selecting an icon.
9. Mentally or physically infirm with age.
10. Any of a number of fishes of the family Carangidae.
19. A small cake leavened with yeast.
21. The Tibeto-Burman language spoken in the Dali region of Yunnan.
24. The income arising from land or other property.
26. An indehiscent fruit derived from a single ovary having one or many seeds within a fleshy wall or pericarp.
28. A heavy odorless colorless gas formed during respiration and by the decomposition of organic substances.
29. The rate at which energy is drawn from a source that produces a flow of electricity in a circuit.
32. Informal terms for a mother.
33. A small pellet fired from an air rifle or BB gun.
35. The cry made by sheep.
36. 1/10 gram.
40. Common Indian weaverbird.
41. A colorless and odorless inert gas.
42. 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. The syllable naming the fourth (subdominant) note of the diatonic scale in solmization.
44. According to the Old Testament he was a pagan king of Israel and husband of Jezebel (9th century BC).
45. A Tibetan or Mongolian priest of Lamaism.
47. The network in the reticular formation that serves an alerting or arousal function.
49. A plant hormone promoting elongation of stems and roots.
50. Small cubes with 1 to 6 spots on the faces.
51. The 7th letter of the Greek alphabet.
55. A white metallic element that burns with a brilliant light.