| Root Words | Meaning | Examples |
| meter/metr | measure | thermometer, perimeter |
| tele | far off | television, telephone |
| psycho | soul; spirit | psychology, psychic |
| therm | heat | thermal, thermometer |
| techno | art; science; skill | technique, technological |
| pseudo | not genuine, false | pseudonym, pseudoscience |
| morph | form; shape | morphology, morphing |
| photo/phos | light | photograph, phosphorous |
| phon | sound | phone, symphony |
| hydr | water | hydration, dehydrate |
| mono | one | monologue, monotonous |
| mis/miso | hate | misanthrope, misogyny |
| micro | small | microbe, microscope |
| hetero | different | heteronym, heterogeneous |
| scope | viewing instrument | microscope, telescope |
| hypo | below; beneath | hypothermia, hypothetical |
| homo | same | homonym, homogenous |
| chron | time | chronological, chronic |
| gram | thing written | epigram, telegram |
| auto | self | autobiography, automobile |
| dyna | power | dynamic, dynamite |
| bio | life | biology, biography |
| dys | bad; hard; unlucky | dysfunctional, dyslexic |
| phobia | fear | claustrophobia, phobic |
| logy | study of | biology, psychology |
| graph | writing | graphic, phonograph |
| nym | name | antonym, synonym |
| anthrop | man; human; humanity | anthropologist, philanthropy |