1. A digital display that uses liquid crystal cells that change reflectivity in an applied electric field.
4. Oldest known reptiles.
12. Title for a civil or military leader (especially in Turkey).
15. A constellation in the southern hemisphere near Telescopium and Norma.
16. An underground tunnel with recesses where bodies were buried (as in ancient Rome).
17. Support resembling the rib of an animal.
18. Characterized by variety.
20. A decree that prohibits something.
21. Affect with wonder.
23. An active and efficient cause.
25. East Indian silk cotton tree yielding fibers inferior to kapok.
26. An amino acid that is found in the central nervous system.
28. In bed.
30. Pastry made with a cream cheese dough and different fillings (as raisins and walnuts and cinnamon or chocolate and walnut and apricot preserves).
34. Harsh or corrosive in tone.
38. An onerous or difficult concern.
39. Ratio of the hypotenuse to the opposite side.
41. The language of the nomadic Lapp people in northern Scandinavia and the Kola Peninsula.
42. Prevent from being included or considered or accepted.
44. Half the width of an em.
46. A rapid escape (as by criminals).
47. A deep bow.
51. Explosive consisting of a yellow crystalline compound that is a flammable toxic derivative of toluene.
52. A soft silvery metallic element of the alkali metal group.
56. Make less active or intense.
57. Large tropical butterfly with degenerate forelegs and an unpleasant taste.
60. (of a bed) Not having the sheets and blankets set in order.
63. The sixth month of the civil year.
64. A military trainee (as at a military academy).
65. A Hindu prince or king in India.
69. Supernatural half-man and half-bird vehicle or bearer of Vishnu.
71. The back side of the neck.
73. The act of slowing down or falling behind.
74. A blue dye obtained from plants or made synthetically.
75. A tricycle (usually propelled by pedalling).
77. A sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain.
78. An independent agency of the United States government responsible for aviation and spaceflight.
79. Only extant member of the order Rhynchocephalia of large spiny lizard-like diapsid reptiles of coastal islands off New Zealand.
80. A river in north central Switzerland that runs northeast into the Rhine.
1. Rock that in its molten form (as magma) issues from volcanos.
2. A steep rugged rock or cliff.
3. A challenge to do something dangerous or foolhardy.
4. Any organic compound formed by adding alcohol molecules to aldehyde molecules.
5. A coenzyme derived from the B vitamin nicotinic acid.
6. A highly unstable radioactive element (the heaviest of the halogen series).
7. A metabolic acid found in yeast and liver cells.
8. A mark left by the healing of injured tissue.
9. Region of western Asia Minor colonized by Ancient Greeks.
10. Diabetes caused by a relative or absolute deficiency of insulin and characterized by polyuria.
11. Lower in esteem.
12. The biblical name for ancient Syria.
13. An ancient Egyptian city on the west bank of the Nile opposite Cairo.
14. Norwegian mathematician (1802-1829).
19. Solid and liquid nourishment taken into the body through the mouth.
22. (Greek legend) The greedy king of Phrygia who Dionysus gave the power to turn everything he touched into gold.
24. An indehiscent fruit derived from a single ovary having one or many seeds within a fleshy wall or pericarp.
27. A soft silvery metallic element of the alkali earth group.
29. Any skeletal muscle having two origins (but especially the muscle that flexes the forearm).
31. Cause to lose one's nerve.
32. The state of having committed an offense.
33. Someone who practices homosexuality.
35. West Indian tree having racemes of fragrant white flowers and yielding a durable timber and resinous juice.
36. A hostel for pilgrims in Turkey.
37. A chad that has been punched or dimpled but all four corners are still attached.
40. A metallic element having four allotropic forms.
43. To fix or set securely or deeply.
45. A rechargeable battery with a nickel cathode and a cadmium anode.
48. Wild sheep of northern Africa.
49. (Akkadian) God of wisdom.
50. A heavy wooden pole (such as the trunk of a young fir) tossed as a test of strength (in the Highlands of Scotland).
53. A passage for water (or other fluids).
54. Type genus of the Parulidae.
55. Port city on Atlantic coast.
58. A city in southern Turkey on the Seyhan River.
59. Any of the openings to the nasal cavities that allow air to flow through the cavities to the pharynx.
61. Joint capital (with Riyadh) of Saudi Arabia.
62. Essential oil or perfume obtained from flowers.
66. Type genus of the Alcidae comprising solely the razorbill.
67. An island in Indonesia south of Borneo.
68. Any culture medium that uses agar as the gelling agent.
70. (usually followed by `to') Naturally disposed toward.
72. A loose sleeveless outer garment made from aba cloth.
76. A bivalent and trivalent metallic element of the rare earth group.