1. Edible tuber of any of several yams.
4. Liveliness and energy.
7. An amino acid that is found in the central nervous system.
11. A federal agency established to coordinate programs aimed at reducing pollution and protecting the environment.
12. A magnetic tape recorder for recording (and playing back) TV programs.
13. Mild yellow Dutch cheese made in balls.
14. The residue that remains when something is burned.
15. (informal) Of the highest quality.
16. A member of an American Indian people of Yucatan and Belize and Guatemala who once had a culture characterized by outstanding architecture and pottery and astronomy.
17. A collection of objects laid on top of each other.
19. A master's degree in fine arts.
21. The longer of the two telegraphic signals used in Morse code.
22. The blood group whose red cells carry both the A and B antigens.
24. The elementary stages of any subject (usually plural).
26. (used to introduce a logical conclusion) From that fact or reason or as a result.
29. African tree having an exceedingly thick trunk and fruit that resembles a gourd and has an edible pulp called monkey bread.
33. A small cake leavened with yeast.
35. An Indian tree of the family Combretaceae that is a source of timber and gum.
36. (Irish) Mother of the ancient Irish gods.
37. A state in north central United States.
43. A blind god.
48. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
49. An international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members.
50. The 2nd letter of the Greek alphabet.
51. A Chadic language spoken south of Lake Chad.
52. A white metallic element that burns with a brilliant light.
53. A soft heavy toxic malleable metallic element.
1. Not only so, but.
2. A domed or vaulted recess or projection on a building especially the east end of a church.
3. A member of the Siouan people formerly living in the Missouri river valley in NE Nebraska.
4. A vinyl polymer used especially in paints or adhesives.
5. Electronic warfare undertaken to insure effective friendly use of the electromagnetic spectrum in spite of the enemy's use of electronic warfare.
6. Manufactured in standard sizes to be shipped and assembled elsewhere.
7. A crystalline rock that can be cut and polished for jewelry.
8. (Babylonian) God of storms and wind.
9. Common Indian weaverbird.
10. A woman hired to suckle a child of someone else.
18. Large burrowing rodent of South and Central America.
20. A port city in southwestern Iran.
23. A light strong brittle gray toxic bivalent metallic element.
25. German botanist who is generally recognized as founding bacteriology when he recognized bacteria as plants.
27. (Akkadian) God of wisdom.
28. The compass point that is one point east (clockwise) of due north.
30. The cry made by sheep.
31. The eleventh month of the civil year.
32. A soft silvery metallic element of the alkali earth group.
34. Date used in reckoning dates before the supposed year Christ was born.
38. Amino acid that is formed in the liver and converted into dopamine in the brain.
39. Type genus of the family Arcidae.
40. Type genus of the Alcidae comprising solely the razorbill.
41. A Chadic language spoken south of Lake Chad.
42. A small ball with a hole through the middle.
44. A young woman making her debut into society.
45. A former agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States.
46. Any of various units of capacity.
47. Towards the side away from the wind.