1. Austrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916).
5. Emblem usually consisting of a rectangular piece of cloth of distinctive design.
9. An informal term for a father.
13. A beverage made by steeping tea leaves in water.
16. A dull persistent (usually moderately intense) pain.
17. The lower house of the parliament of the Republic of Ireland.
18. In bed.
19. A unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material.
20. An independent ruler or chieftain (especially in Africa or Arabia).
21. A unit of area (4840 square yards) used in English-speaking countries.
22. Remove with or as if with a ladle.
23. A period marked by distinctive character or reckoned from a fixed point or event.
24. A summary that repeats the substance of a longer discussion.
26. Italian operatic soprano (born in 1922).
29. Of or relating to a creed.
31. (of complexion) Blemished by imperfections of the skin.
33. Minute single-celled green freshwater organism having a single flagella.
39. Of short duration or distance.
40. Of a pale purple color.
44. Having nine hinged bands of bony plates.
45. Any seed plant yielding balsam.
47. A rechargeable battery with a nickel cathode and a cadmium anode.
50. A metallic element having four allotropic forms.
51. (Brit) A tough youth of 1950's and 1960's wearing Edwardian style clothes.
52. Infestation of the pubic hair by crab lice.
54. Greek Cynic philosopher who rejected social conventions (circa 400-325 BC).
56. Any of a class of organic compounds that contain the divalent radical -CONHCO-.
58. A former communist country in eastern Europe and northern Asia.
60. (prefix) Opposite or opposing or neutralizing.
61. Have supper.
62. A resident of Iowa.
63. Silkworm moths.
65. Any of various large keen-sighted diurnal birds of prey noted for their broad wings and strong soaring flight.
69. The complete duration of something.
70. An inspection of the accounting procedures and records by a trained accountant.
72. Remove the hand from.
74. A portable enclosure in which babies may be left to play.
79. Filled with a great quantity.
80. A Hindu disciple of a swami.
82. Grind together, of teeth.
86. (of snakes and eels) Naturally footless.
89. Very small silvery eellike schooling fishes that burrow into sandy beaches.
91. Aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar.
92. A large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments).
93. (Greek mythology) The Muse of lyric and love poetry.
95. An island in Indonesia east of Java.
96. Imperial dynasty that ruled China (most of the time) from 206 BC to 221 and expanded its boundaries and developed its bureaucracy.
97. Angular distance above the horizon (especially of a celestial object).
98. Large antelope with lightly spiraled horns of desert regions of North Africa.
99. English essayist (1775-1834).
100. A condition (mostly in boys) characterized by behavioral and learning disorders.

1. A flat-bottomed volcanic crater that was formed by an explosion.
2. The highest level or degree attainable.
3. Elegant and stylish.
4. (classical mythology) A hero noted for his strength.
5. A federal agency established to regulate the release of new foods and health-related products.
6. Relating to or consisting of or producing or resembling milk.
7. Open to or abounding in fresh air.
8. Fleshy spore-bearing inner mass of e.g. a puffball or stinkhorn.
9. A sudden numbing dread.
10. A port city in southwestern Iran.
11. A tricycle (usually propelled by pedalling).
12. A sweetened beverage of diluted fruit juice.
13. A lever that is operated with the foot.
14. A British peer ranking below a Marquess and above a Viscount.
15. (Old Testament) In Judeo-Christian mythology.
25. A short introductory essay preceding the text of a book.
27. A silvery ductile metallic element found primarily in bauxite.
28. (plural) Any group of human beings (men or women or children) collectively.
30. Half the width of an em.
32. A soft gray ductile metallic element used in alloys.
34. Accumulation in the blood of nitrogen-bearing waste products (urea) that are usually excreted in the urine.
35. A coating of gold or of something that looks like gold.
36. An early French settler in the Maritimes.
37. Of or relating to or in the manner of the playwright Henrik Ibsen.
38. A place where taxis park while awaiting customers.
41. Existing as an essential constituent or characteristic.
42. Gracefully slender.
43. A radioactive element of the actinide series.
46. A form of address for a man.
48. English aristocrat who was the first wife of Prince Charles.
49. Oval reproductive body of a fowl (especially a hen) used as food.
53. A colorless and odorless inert gas.
55. A town in southwestern Idaho.
57. Caused to be slower or later.
59. A port city in southern Wales on an inlet of the Bristol Channel.
64. Ash-colored or anemic looking from illness or emotion.
66. Normal relaxed breathing.
67. Belonging to or on behalf of a specified person (especially yourself).
68. A passage with access only at one end.
71. A Mid-Atlantic state.
73. Small genus of Asian evergreen trees having columnar crowns and distinguished by leaves lacking a midrib.
75. Lap at the front of a coat.
76. Choose and follow.
77. Any polemoniaceous plant of the genus Phlox.
78. Obvious and dull.
81. Apply a lubricant to.
83. Title for a civil or military leader (especially in Turkey).
84. Any of a number of fishes of the family Carangidae.
85. The (prehensile) extremity of the superior limb.
87. Goddess of fate.
88. Experiencing or showing sorrow or unhappiness.
90. A user interface in which you type commands instead of choosing them from a menu or selecting an icon.
94. A hard gray lustrous metallic element that is highly corrosion-resistant.