| A | B |
| anthropo | man or mankind |
| anthropology | study of man |
| anthropoid | shaped like a man |
| anthropophagy | cannibalism |
| anthropomorphic | form of a man |
| astro | star |
| astrology | study of stars to interpret human affairs |
| astronomy | real science of stars |
| asterisk | mark shaped like a star |
| asteroid | star that is dying |
| disaster | total wreck |
| centri | center |
| centrifugal | fleeing from the center |
| centrifuge | instrument which spins blood cells out in order to determine cell count |
| chrono | time |
| chronology | study of time |
| chronological | in order of time |
| chronometer | watch or literally measurement of time |
| chronic | all the time |
| anachronism | an element of a literary piece that is out of time and place |
| eu | good or well |
| eulogy | good speech about a dead person |
| euphonic | nice sounding |
| eugenics | improving a society by attempts at altering genes |
| euphemism | polite term for an action such as “passed away” for died |
| geo | earth |
| geology | study of rocks and soil |
| geography | study of earth’s surface and mountains |
| geometry | literally- measurement of the earth’s surface- but now a branch of math |
| geode | rock with crystals inside |
| helio | sun |
| heliotherapy | using sunshine to improve a health issue |
| heliotrope | flowers that turn toward the sun |
| heliocentric | sun-centered |
| logy | study |
| biology | study of life |
| psychology | study of the mind |
| peri | around |
| periscope | instrument to see around as on a submarine |
| perigee | the point in the orbit of a heavenly body or of an artificial satellite at which it is nearest to the earth |
| perimeter | measurement around a figure |
| scope | see |
| telescope | instrument to see far away |
| microscope | instrument to see tiny things |
| scope | to check out |
| tele | far |
| telephone | to hear from far away |
| telescope | to see far away |
| teleprompter | instrument to prompt words from far away |
| telephoto | to bring light from far away |
| theo | god |
| theology | study of gods and religion |
| theosophy | wise in the ways of gods |