1. The sign language used in the United States.
4. The battle in 202 BC in which Scipio decisively defeated Hannibal at the end of the second Punic War.
8. A dark-skinned member of a race of people living in Australia when Europeans arrived.
11. Aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar.
12. Not only so, but.
13. A conspicuous disparity or difference as between two figures.
14. An ugly evil-looking old woman.
15. An island northwest of Wales.
16. Goddess of criminal rashness and its punishment.
17. A public promotion of some product or service.
19. A bachelor's degree in science.
21. A radioactive element of the actinide series.
24. (Akkadian) God of wisdom.
26. Reconnaissance (by shortening).
27. A port city in southwestern Turkey on the Gulf of Antalya.
31. One million periods per second.
33. Having the wind against the forward side of the sails.
34. (Greek mythology) Goddess of the earth and mother of Cronus and the Titans in ancient mythology.
36. Essential oil or perfume obtained from flowers.
38. The blood group whose red cells carry both the A and B antigens.
39. Being one more than forty.
42. (Norse mythology) One of the Aesir and avenger of Balder.
44. A number of sheets of paper fastened together along one edge.
47. The United Nations agency concerned with international maritime activities.
49. A loose sleeveless outer garment made from aba cloth.
50. (usually followed by `to') Naturally disposed toward.
51. Someone who works (or provides workers) during a strike.
52. A metric unit of volume or capacity equal to 10 liters.

1. Title for a civil or military leader (especially in Turkey).
2. Any of a number of fishes of the family Carangidae.
3. The act of slowing down or falling behind.
4. A complex of enzymes that cause glycolysis.
5. (in Gnosticism) A divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe.
6. An adult male person (as opposed to a woman).
7. According to the Old Testament he was a pagan king of Israel and husband of Jezebel (9th century BC).
8. Title for a civil or military leader (especially in Turkey).
9. A Chadic language spoken south of Lake Chad.
10. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
18. An indehiscent fruit derived from a single ovary having one or many seeds within a fleshy wall or pericarp.
20. A cylindrical drawstring bag used by sailors to hold their clothing and other gear.
22. The highest level or degree attainable.
23. A soft silvery metallic element of the alkali earth group.
25. (botany) Of or relating to the axil.
28. The longer of the two telegraphic signals used in Morse code.
29. Being nine more than ninety.
30. A state in northwestern North America.
32. A high-crowned black cap (usually made of felt or sheepskin) worn by men in Turkey and Iran and the Caucasus.
35. A unit of current equal to 10 amperes.
36. The act of slowing down or falling behind.
37. A crown-like jewelled headdress worn by women on formal occasions.
40. A small cake leavened with yeast.
41. Any of numerous local fertility and nature deities worshipped by ancient Semitic peoples.
43. (often followed by `of') A large number or amount or extent.
45. A young woman making her debut into society.
46. Having undesirable or negative qualities.
47. A hard gray lustrous metallic element that is highly corrosion-resistant.
48. A very poisonous metallic element that has three allotropic forms.