| A | B |
| LOGY | study of |
| the study of ancient cultures based on artifacts and other remains | archeology |
| a pseudoscience claiming to foretell the future by a study of the stars | astrology |
| the study of the relationship between organisms and their environment (home) | ecology |
| the study of the formation and development of embryos | embryology |
| the study of insects (whose bodies are "cut" in three segments) | entomology |
| the study of the origin (true meaning) and development of words | etymology |
| the study of the history of the Earth, especially as recorded in rocks | geology |
| the study of the atmosphere, especially weather and weather conditions | meteorology |
| the branch of zoology dealing with birds | ornithology |
| the study of mental processes and behavior | psychology |
| ARCH | ancient |
| ASTR | star |
| ECO | home |
| EN | in |
| TOM | to cut |
| ETYM | true |
| GEO | Earth |
| METEORA | things in the air |
| ORNITH | bird |
| PSYCH | mind |