Ology Suffix Words Starting with H
| Heortology | the study of religious feasts |
| Heresiology | the study of heresies |
| Hematology/Haematology | the study of blood |
| Heliology | the study of the Sun |
| Helioseismology | the study of vibrations and oscillations in the Sun |
| Helminthology | the study of parasitic worms |
| Hepatology | the study of the liver |
| Herbology | the study of the therapeutic use of plants |
| Herpetology | the study of reptiles and amphibians |
| Heterology | the study of abnormalities in tissue structure or organization |
| Heteroptology | the study of true bugs |
| Hieroglyphology | Egyptian hieroglyphics,an ancient writing system |
| Hierographology | the study of sacred texts |
| Hierology | the study of the sacred and sacredness. |
| Hippology | the study of horses |
| Histology | the study of living tissues |
| Histopathology | the study of the (microscopic) structure of diseased tissues |
| Historiology | the study or knowledge of history |
| Hoplology | the study of weapons |
| Homology | a
concept in anthropology, biology, algebraic topology, and sociology, meaning "likeness in structure" |
| Hagiology | the study of saints |
| Horology | the science of time measurement |
| Hydrogeology | the study of underground water |
| Hydrology | the study of water |
| Hygiology | the study of cleanliness |
| Hygrology | the study of humidity |
| Hymnology | the study of hymns |
| Hydrobiology | the study of aquatic organisms |
| Hydrometeorology | the study of atmospheric moisture |
| Hyetology | the science of rainfall |
| Hypnology | the study of sleep; study of hypnosis |
| Helcology | the study of ulcers |
| Hamartiology | the study of sin |