1. An enzyme that catalyzes the oxidation of many body compounds (e.g., epinephrine and norepinephrine and serotonin).
4. (plate tectonic theory) A hypothetical continent including all the landmass of the earth prior to the Triassic period when it split into Laurasia and Gondwanaland.
10. (Scotland) A small loaf or roll of soft bread.
13. Any high mountain.
14. A gradual decline (in size or strength or power or number).
15. A flat wing-shaped process or winglike part of an organism.
16. The function or position properly or customarily occupied or served by another.
18. English architect who designed more than fifty London churches (1632-1723).
19. A flexible container with a single opening.
20. Summer cypress.
22. Lower in esteem.
24. Harsh or corrosive in tone.
26. Jordan's port.
29. A transuranic element that has not been found in nature.
33. (used especially of commodities) In the natural unprocessed condition.
35. Twist or braid together, interlace.
36. A woman hired to suckle a child of someone else.
38. The front of the head from the forehead to the chin and ear to ear.
40. American prizefighter who won the world heavyweight championship three times (born in 1942).
41. Common Indian weaverbird.
42. A family of Sino-Tibetan languages spoken in southeastern Asia.
45. Cubes of meat marinated and cooked on a skewer usually with vegetables.
48. The 3rd letter of the Greek alphabet.
52. Old World woody vines.
56. A loose sleeveless outer garment made from aba cloth.
57. Make less active or intense.
60. Channel into a new direction.
61. An elegantly dressed man (often with affected manners).
62. A sport in which participants must travel on skis.
64. A knockout declared by the referee who judges one boxer unable to continue.
65. A nucleic acid consisting of large molecules shaped like a double helix.
66. Gained or acquired.
67. (Norse mythology) God of war and strife and son of Odin.

1. A covering to disguise or conceal the face.
2. Of or being the lowest female voice.
3. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
4. A tricycle (usually propelled by pedalling).
5. The blood group whose red cells carry both the A and B antigens.
6. The compass point that is one point west of due north.
7. A young woman.
8. The compass point midway between northeast and east.
9. Superclass of eel-shaped chordates lacking jaws and pelvic fins.
10. A small cake leavened with yeast.
11. By bad luck.
12. Especially one side of a leaf.
17. According to the Old Testament he was a pagan king of Israel and husband of Jezebel (9th century BC).
21. The branch of computer science that deal with writing computer programs that can solve problems creatively.
23. An unofficial association of people or groups.
25. Worn or shabby from overuse or (of pages) from having corners turned down.
27. God of love and erotic desire.
28. Distant in either space or time.
30. An agency of the United Nations affiliated with the World Bank.
31. (Norse mythology) One of the Aesir known for his beauty and skill with bow and skis.
32. Japanese ornamental tree with fragrant white or pink blossoms and small yellow fruits.
34. The basic unit of money in Bangladesh.
37. The lean flesh of a fish similar to cod.
39. A compartment in front of a motor vehicle where driver sits.
43. Title for a civil or military leader (especially in Turkey).
44. The United Nations agency concerned with atomic energy.
46. Remove from memory or existence.
47. A coffee cake flavored with orange rind and raisins and almonds.
49. A master's degree in literature.
50. (of especially liquids) Clouded as with sediment.
51. A theatrical performer.
53. Very dark black.
54. A Chadic language spoken south of Lake Chad.
55. A self-replicating protein molecule that occupies a fixed place on a chromosome.
58. Relating to or characteristic of or occurring in the air.
59. A silvery malleable metallic element that resists corrosion.
63. A ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group.