This essential list of 100 ology words includes important fields of study and disciplines. These vocabulary words are useful for exams, general knowledge, and language development.
Science & Life
| Word |
Meaning |
| 1. Biology |
Study of life. |
| 2. Zoology |
Study of animals. |
| 3. Botany |
Study of plants. |
| 4. Anatomy |
Study of body structure. |
| 5. Physiology |
Study of body functions. |
| 6. Genetics |
Study of heredity. |
| 7. Microbiology |
Study of microorganisms. |
| 8. Ecology |
Study of environment. |
| 9. Entomology |
Study of insects. |
| 10. Virology |
Study of viruses. |
| 11. Bacteriology |
Study of bacteria. |
| 12. Mycology |
Study of fungi. |
| 13. Parasitology |
Study of parasites. |
Earth & Environment
| Word |
Meaning |
| 14. Geology |
Study of earth. |
| 15. Meteorology |
Study of weather. |
| 16. Climatology |
Study of climate. |
| 17. Oceanography |
Study of oceans. |
| 18. Seismology |
Study of earthquakes. |
| 19. Hydrology |
Study of water. |
| 20. Volcanology |
Study of volcanoes. |
| 21. Paleontology |
Study of fossils. |
| 22. Limnology |
Study of freshwater bodies. |
Human & Society
| Word |
Meaning |
| 23. Psychology |
Study of mind. |
| 24. Sociology |
Study of society. |
| 25. Anthropology |
Study of humans. |
| 26. Criminology |
Study of crime. |
| 27. Neurology |
Study of nervous system. |
| 28. Psychiatry |
Study of mental disorders. |
| 29. Ethology |
Study of behavior. |
| 30. Demography |
Study of population. |
Medical & Health
| Word |
Meaning |
| 31. Cardiology |
Study of heart. |
| 32. Dermatology |
Study of skin. |
| 33. Oncology |
Study of cancer. |
| 34. Pathology |
Study of diseases. |
| 35. Immunology |
Study of immune system. |
| 36. Pharmacology |
Study of drugs. |
| 37. Hematology |
Study of blood. |
| 38. Radiology |
Study of imaging techniques. |
| 39. Toxicology |
Study of poisons. |
| 40. Epidemiology |
Study of diseases in populations. |
Language & Literature
| Word |
Meaning |
| 41. Philology |
Study of language. |
| 42. Lexicology |
Study of words. |
| 43. Etymology |
Study of word origins. |
| 44. Morphology |
Study of word structure. |
| 45. Semantics |
Study of meaning. |
| 46. Stylistics |
Study of writing style. |
Social Sciences
| Word |
Meaning |
| 47. Political Science |
Study of politics. |
| 48. Economics |
Study of economy. |
| 49. Theology |
Study of religion. |
| 50. Archaeology |
Study of ancient cultures. |
| 51. Historiology |
Study of history. |
| 52. Jurisprudence |
Study of law. |
Physical & Mathematical Sciences
| Word |
Meaning |
| 53. Mathematics |
Study of numbers. |
| 54. Statistics |
Study of data. |
| 55. Topology |
Study of spatial properties. |
| 56. Cosmology |
Study of universe. |
| 57. Logic |
Study of reasoning. |
| 58. Physics |
Study of matter and energy. |
| 59. Chemistry |
Study of substances. |
| 60. Thermology |
Study of heat. |
| 61. Acoustics |
Study of sound. |
| 62. Optics |
Study of light. |
Specialized Fields
| Word |
Meaning |
| 63. Ornithology |
Study of birds. |
| 64. Herpetology |
Study of reptiles. |
| 65. Ichthyology |
Study of fish. |
| 66. Arachnology |
Study of spiders. |
| 67. Primatology |
Study of primates. |
| 68. Mammalogy |
Study of mammals. |
Advanced & Applied
| Word |
Meaning |
| 69. Gerontology |
Study of aging. |
| 70. Andrology |
Study of male health. |
| 71. Gynecology |
Study of female health. |
| 72. Urology |
Study of urinary system. |
| 73. Nephrology |
Study of kidneys. |
| 74. Pulmonology |
Study of lungs. |
| 75. Gastroenterology |
Study of digestive system. |
Abstract & Conceptual
| Word |
Meaning |
| 76. Ideology |
Study of ideas. |
| 77. Epistemology |
Study of knowledge. |
| 78. Ontology |
Study of existence. |
| 79. Axiology |
Study of values. |
| 80. Methodology |
Study of methods. |
| 81. Chronology |
Study of time order. |
| 82. Numismatics |
Study of coins. |
| 83. Graphology |
Study of handwriting. |
| 84. Phenomenology |
Study of experiences. |
| 85. Soteriology |
Study of salvation. |
| 86. Eschatology |
Study of end times. |
| 87. Mythology |
Study of myths. |
| 88. Dendrology |
Study of trees. |
| 89. Pedology |
Study of soil. |
| 90. Thanatology |
Study of death. |
Additional Important Terms
| Word |
Meaning |
| 91. Astrobiology |
Study of life in space. |
| 92. Cryology |
Study of ice and cold. |
| 93. Speleology |
Study of caves. |
| 94. Palynology |
Study of pollen. |
| 95. Aerology |
Study of atmosphere. |
| 96. Agrobiology |
Study of plant growth. |
| 97. Chronobiology |
Study of biological timing. |
| 98. Ethnology |
Study of cultures. |
| 99. Kinesiology |
Study of body movement. |
| 100. Paleobiology |
Study of ancient life. |
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