lorazepam

The story

1. Proto-Indo-European*ǵʰelh₃-
2. Proto-Indo-European*ǵʰl̥h₃rós
3. Proto-Hellenic*kʰlōrós
4. Ancient Greekχλωρός (khlōrós)
5. Englishchloro-
6. Englishchlor-
7. Arabicلُبَان (lubān)
8. Proto-Indo-European*yew-
9. Proto-Indo-European*yéwos
10. Proto-Indo-Iranian*yáwas
11. Sanskritयव (yava)bor.?
12. Proto-Austronesian*zawa
13. Proto-Malayo-Polynesian*zawader.?
14. Old Javanesejawa
15. Old JavaneseJawi
16. Javaneseꦗꦮꦶ (jawi)
17. Arabicجَاوَة (jāwa)
18. Arabicـِيّ (-iyy)
19. Arabicجَاوِيّ (jāwiyy)
20. Arabicلُبَان جَاوِيّ (lubān jāwiyy)
21. Catalanbenjuí
22. Middle Frenchbenjoin
23. Englishbenzoin
24. Englishbenzo-
25. Proto-Indo-European*dwóh₁
26. Proto-Indo-European*dwi-
27. Proto-Hellenic*dwi-
28. Ancient Greekδῐ- (dĭ-)
29. Latindi-
30. Englishdi-
31. Proto-Indo-European*né
32. Proto-Indo-European*n̥-
33. Proto-Hellenic*ə-
34. Ancient Greekᾰ̓- (ă-)
35. Proto-Indo-European*gʷeyh₃-
36. Proto-Indo-European*gʷih₃wós
37. Proto-Indo-European*gʷíh₃weti
38. Proto-Hellenic*gʷyṓw-ō
39. Proto-Hellenic*d͏̌ṓwō
40. Ancient Greekζώω (zṓō)
41. Ancient Greekζῶ (zô)
42. Ancient Greekζωή (zōḗ)
43. Frenchazote
44. Englishazote
45. Englishaz-
46. Proto-Afroasiatic*sṗɣ?
47. Proto-Semitic*šabʕ-bor.?
48. Proto-Indo-European*septḿ̥
49. Proto-Hellenic*heptə́
50. Ancient Greekἑπτᾰ́ (heptắ)
51. Frenchhepta-
52. Englishazepine
53. Englishdiazepine
54. English(benzo)diazep(ine)
55. Egyptianjmn
56. Ancient GreekᾸ̓́μμων (Ắmmōn)
57. LatinAmmōn
58. Latinammoniacus
59. Englishammonia
60. Proto-Indo-European*dʰeh₁-
61. Englisham(ide)
62. Englishdiazepam
63. English todaylorazepam

From (ch)lor- + -azepam (“diazepam derivative”).