| Word Part | Meaning | Examples |
| ab | away | absent, abduct, abnormal, abort |
| acer (acid) | bitter, sour | acerb, acerbate, acidity |
| acro | top, height | acrobat, acronym, acrophobia |
| acu | sharp | acute, acupressure, acupuncture, acuity |
| aer | air, atmosphere | aerosol, aeroplane |
| agri | farming | agriculture, agrarian |
| alb | white | albino, albumen, albacore |
| amb | around, both | ambient, ambiguous, amble |
| ambul | walk, move | amble, ambulance, ambulant |
| amic | friendly | amicable, amicably, dynamic |
| anim | life, living | animal, animate, equanimity |
| ann (enn) | year | anniversary, annual, millennium |
| ante | before | antemortem, antebellum |
| anthro | human | anthropology, philanthropist |
| anti (ant) | against, opposite | antagonist, antidote, antibiotics |
| aqu | water | aquarium, aquifer |
| arbor | tree | arborist, harbored, arborize |
| arche (archi) | primitive, origin | archaic, archaeology, archive |
| arthr | joint | arthroscope, arthritis, arthropod |
| astro | star | astronaut, astronomy, astrogate |
| audi | hearing, sound | auditory, auditorium, audience |
| auto | self | autopilot, autonomous, automatic |
| avi | bird | aviator, aviary, aviatrix |
| bel | war, fight | rebel, antebellum |
| bene | good | benefit, benign, benevolent, benefactor |
| bi | two | bicycle, biceps, biscotti, biweekly |
| biblio | book | bibliography, bibliophile |
| bio | life | biology, biological, biography |
| blast | cell, primitive | blastula, fibroblast, blastoderm |
| bon | good | bonus, bonanza |
| cap | head | capital, decapitate, captain |
| capt (cept) | take hold of | captivate, intercept, capture |
| cardi | heart | cardiac, cardiologist, cardiovascular |
| cata | intensive, according to | cataclysm, catastrophic, catalog |
| caust (caut) | to burn | cauterize, holocaust |
| cede (cess, ced) | go, withdraw | recede, exceed, recession |
| ceive | take | receive, perceive, reconceive |
| cent | hundred | centennial, century, percent |
| cerebr | brain | cerebral, cerebrate |
| cert | sure | certain, ascertain, certify |
| chron | time | chronicle, chronology |
| cide | kill | genocide, pesticide |
| circum | around | circumference, circumstance |
| clam (claim) | shout, speak | exclaim, clamor, proclaim |
| clar | clear | clarify, clarification, declare |
| clud (clus) | close | conclusion, seclude, conclude |
| clin (cline) | lean | inclination, incline, recline |
| co | with, together, joint | coauthor, cosign, collaborate, cooperate |
| cog | know | cognitive, incognito, cognition |
| con | together, common | connect, convention, concur |
| contra | against | contraband, contrary |
| corp | body | corporation, corpse, corporal |
| cosm | world | cosmic, microcosm |
| counter | opposing, contrary | counteract, counterintuitive, counteroffer |
| cracy (crat) | government, authority | democracy, democrat, theocracy, bureaucracy |
| cred | believe | incredible, credit, credulous, credence |
| crypt | hidden, secret | cryptic, encrypt |
| culp | blame, fault | culpable, exculpate, culprit |
| cumul | mass, heap | accumulate, cumulative |
| cycle | circle | bicycle, cyclone, cyclist |
| dec (deka) | ten | decade, decimal. decathlon |
| dem | people | democracy, demographics |
| dent | tooth | dentist, dentistry, dentifrice |
| derma | skin | dermatologist, hypodermic, dermatitis, pachyderm |
| di | twice, two | dilemma, diverse, dioxide |
| dia | across, through | dialogue, diameter, diagnosis |
| dic (dict) | speak | dictate, dictator, contradict |
| domin | master | dominate, predominate, dominerring |
| don | give | donate, pardon, donor |
| dorm | sleep | dormitory, dormant, dormer |
| dur | harden, long lasting | durable, duration, endure |
| dyn | power, energy | dynamite, dynamic |
| ego | self | egotistical, egomania |
| ence (ance) | state, condition | performance, conference, insurance |
| endo | within, inside | endocrine, endometrial |
| esth (aesth) | beauty, feeling | esthetician, aesthetic, kinesthesia |
| ethn | nation, race | ethnicity, ethnology, ethnocentric |
| eu | good, well | euphemism, euphoria |
| ex | out, former | exit, ex-girlfriend, exterminate, extract |
| extra | beyond | extraordinary, extraterrestrial, extravagance |
| fac | make, do | artifact, factory, factor, malefactor |
| famil | a close attendant | family, familiar |
| femin | woman | feminism, feminine |
| fend (fens) | strike | offend, offense, defend, defense |
| fer | carry, bring | transfer, ferry, conifer, confer |
| fid | trust | confidence, fidelity |
| flect (flex) | bend | reflect, flexible, inflect, deflect |
| foli | leaf | foliage, defoliant |
| fore | in front of, previous | before, therefore, forebode, forecast |
| fract (frag) | to break | fracture, fragment, fraction |
| fug | flee, escape | refugee, fugitive, refuge |
| fum | smoke | fumes, fumigation |
| fusc | dark | obfuscation, infuscate, subfuscous, fuscous |
| gen | family, born | genetics, generation, gender, gene |
| geo | earth | geography, geology |
| ger | old age | geriatrics, gerontology |
| giga | A billion | gigabyte, gigawatt |
| gon | angle | polygon, decagon, octagon, hexagon |
| grad (gress) | to step, to go | digress, gradual, graduate |
| gram | writing | grammar, grammatically |
| graph | write | paragraph, autograph |
| grat | pleasing | gratification, gratitude, grateful |
| grav (griev) | heavy | gravity, grave, aggravate, greive |
| gymn | bare | gymnast, gymnastics, gymnosperm |
| gyn | woman | gynecology, androgynous, misogyny |
| hab (hib) | have | habit, habitual, prohibition, exhibit |
| helio | sun | heliograph, heliometer, perihelion |
| hemo | blood | hemorrhage, hemoglobin, hemophiliac |
| hepa | liver | hepatitis, hepatoma, hepatotoxic |
| herbi | grass, plant | herbivore, herbicide, herbal |
| hex | six | hexagon, hexapod, hexameter |
| hiero | sacred, holy | hierarchy, hieroglyphics |
| histo | tissue | histology, histogenesis, histochemical |
| homo (homeo) | same, alike | homogeneous, homonym, homeopath |
| hosp | guest | hospital, hospice, hospitable |
| host | enemy, stranger | hostage, hostile |
| hydra | water | hydrate, hydraulic |
| hyper | over, beyond | hyperactive, hyperventilate |
| hypno | sleep | hypnotic, hypnosis |
| hypo | under | hypothermic, hypothesis, hypoglycemia |
| ian | related to | librarian, historian, pedestrian |
| iatr | medical care | geriatrics, pediatrics, podiatrist |
| icon | image | iconic, iconology |
| ideo | idea | ideology, ideologue, ideologic |
| idio | peculiar, distinct | idiotic, idiomatic |
| in (il) | not | incapable, incomplete, informal, illegal, illogical |
| infra | beneath | infrastructure, infrared |
| init | to begin or enter | initiate, initiation, initiative, initial |
| inter | between | interview, international, interstate |
| ir | not | irrational, irredeemable, irrelevant, irregular, |
| | irresponsible |
| iso | equal | isobar, isometric |
| ject | throw, push | eject, reject, interject |
| jud | law | judicial, judge, judgement |
| junct | join | conjunction, junction, disjunctions |
| juven | young | juvenile, rejuvenate |
| kilo | thousand | kilobyte, kilometer, kilogram |
| kine | movement | telekinesis, kinetic, kinesthetic |
| lab | work | elaborate, laboratory, laborious, labor, collaborate |
| lat | broad, wide | dilate, latitude |
| later | side | bilateral, unilateral |
| laud | praise | laudably, applause, applaud |
| lax | not tense | relax, relaxation, laxness, laxative |
| less | without | homeless, useless, wireless, restless |
| lev | lift | elevator, levitate, level |
| lex | word, law | lexicology, dyslexic, alexia |
| liber | free | liberty, liberate, libertine |
| lingu | language | bilingual, linguistics, linguist |
| lipo | fat | liposuction, lipase |
| lith (lite, ite) | mineral, rock, fossil | appatite, granite, monolith |
| liter | letter | alliteration, literate, literal, literacy |
| loc | place | location, discolate, relocate |
| locu (loqu) | speak | loquacious, eloquent |
| log (logy) | study, speech | logic, dialogue, monologue |
| longus | long | longevity, longitude |
| luc | light | elucidate, lucid, translucent |
| lud (lus) | to play, display | prelude, illusion, delude, allude |
| lumin | light | illumination, illuminate, luminol, lumen |
| macro | large, great | macroeconomics, macronutrients, macroevolution |
| maj | greater | majority, majesty, major |
| mal | bad, evil | malice, maltreat, malfeasance |
| man | hand | manicure, manual, manager, maneuver |
| mand | to order | mandate, mandatory, command, demand |
| mania | madness, excessiveness | egomania, maniac, hypermania |
| mar | sea | marine, marina, maritime, aquamarine |
| mater (matr) | mother | maternity, maternal, matriarch, matrimony |
| max | greatest | maximum, maximize |
| medi | middle | mediocre, medium, medieval |
| mega | large | megaphone, megastructure, megadose |
| melan | black, dark | melancholy, melanoma, melodrama |
| memor | remember | commemorate, memory, memorial |
| merge | dip, dive | immerge, submerge |
| meso | middle | Mesoamerica, meson |
| meta | change, beyond, after | metaphysics, metamorphosis, metastasis |
| meter | measure | diameter, thermometer |
| micro | small | microscope, micronutrient |
| mid | middle | midway, midterm, midpoint, midweek |
| migr | move | immigrant, emigrate, migrant, migration |
| milli | one thousandth | millimeter, millibar, millileter |
| min | small | minimum, miniature, mini-mart, minute |
| mir | amazement | miraculous, mirage |
| mis | wrong, bad | mistake, misprint, misinterpret, misbehave |
| miss (mit) | send, cast | remit, dismiss, missle, emit |
| mob | move | mobilize, immobilize, mobility |
| mon | warn | summon, admonish, premonition, monitor |
| mort | death | mortuary, immortal, mortify |
| mot (mov) | move | motion, motivate, remove, moveable |
| multi | many | multicultural, multigrain, multimedia, multicolored |
| mut | to change | mutate, mutation |
| my | muscle | myocardium, myosin, myasthenia |
| narr | tell | narrator, narration, narrative |
| nat | born | innate, natural, natal |
| naut | ship | nautical, astronaut, argonaut |
| neg | no | negate, negative, renege |
| neur | nerve | neuralgia, neurologist, nerves, neurotic |
| neo | new | neophyte, neonatal, neologistic, neocolonialism |
| nomin | to name | nominate, misnomer, nominal, nomination |
| non | not | nonviolent, nonstop, nonrefundable |
| not | note, paper | notable, noteworthy |
| noun | declare | announce, denounce, announcement |
| nov | new | novice, renovate, novelty |
| null | none | nullify, nullification, nulliparity |
| numer | number | numeral, numerical, enumerate, numerous |
| ob (op) | in the way, against | object, objection, opposition, obscure |
| oct | eight | octopus, octagon, octave |
| ocu | eye, sight | oculist, binoculars, monocula |
| omni | all | omnipotent, omniscient, omnivorous |
| ono (onym) | name | onomatopoeia, anonymous, acronym |
| opt | best | optimal, optimum, optimize |
| ortho | straight | orthodontist, orthopedic |
| osteo | bone | osteoporosis, osteoarthritis |
| ous | having | adventurous, hazardous, nauseous, joyous |
| out | beyond, surpass, exceed | outgoing, outdoor, outside, outlive |
| over | excessive | overconfident, overstock, overexcited, overrun |
| oxy | sharp | oxymoron, oxidize |
| paleo | ancient | paleontologist, Paleolithic, paleography |
| pan | all | pandemic, panorama, pantheon, panacea |
| para | beside, related | parallel, parasite, paramedic |
| path | feeling, disease | pathogen, sympathetic, psychopath |
| pel (puls) | drive, push | dispel, repulse, compel, compulsion |
| ped | foot, kid | pedestrian, pedometer, pediatrician |
| penta | five | pentagon, pentagram, pentathlon |
| per | through | perception, perceive |
| peri | around | perimeter, peripheral |
| phag | to eat | esophagus, sarcophagi |
| phil | loving | philanthropic, philosophy |
| phob | fear | hydrophobia, phobia, claustrophobic |
| phon | sound | telephone, saxophone, microphone |
| photo | light | photograph, photogenic, photosynthesis |
| phyt | plant, to grow | hydrophyte, neophyte |
| pneu | air, breath | pneumonia, pneumatic |
| poli (polis) | city | metropolis, cosmopolitan |
| pop | people | population, popular |
| port | carry | portable, deport, portal |
| pos | put, place | position, compose, deposit |
| post | after | posterior, postpone, postmortem |
| pre | before | prevent, predetermined, precaution, preview |
| psuedo | false | pseudonym, pseudoscience |
| psyche | mind, spirit | psychology, psychic |
| pugn (pung) | to fight | pugnacious, repugnant, pungent |
| pul | urge | compulsion, impulsive, expulsion |
| purg | clean | purge, purgatory, expurgate |
| pyr | fire | pyromaniac, pyrogen |
| quad | four | quadruple, quadrant, quadriplegic |
| quin | five | quints, quintessence |
| radic (radix) | root | eradicate, radical, radish |
| re | again | rebuild, renew, restart, reflect |
| reg | guide, rules | regulate, regular, regent, regime |
| retro | back, backward | retroactive, retrospect, retrograde |
| rhod | red | rhodopsin, cynorrhodon, rhodamine |
| rid | laugh | ridicule, ridiculous |
| rub | red | ruby, rubella, bilirubin |
| rupt | burst | rupture, disrupt, interrupt, erupt |
| san | health | sane, sanity, insane, sanitation |
| scend | climb, go | ascend, crescendo, descent |
| sci | to know | science, conscience, conscious, omniscient |
| scop | see, look | telescope, microscope |
| scrib | write | scribe, prescribe, inscribe, describe |
| se | apart | secede, seclude, serum |
| sect | cut | dissect, intersect, section |
| sed | sit | sediment, sedentary |
| self | of, for, by itself | self-respect, self-control, selfish, selfless |
| semi | half | semicircle, semicolon, semifinal |
| sens | feel | sensitive, consent, sentimental |
| serv | to save or keep | conservation, reserve, preserve |
| sol | comfort | consolation, solace |
| son | sound | consonant, supersonic |
| soph | wise | philosophy, sophisticated, sophism |
| spect | see | spectator, spectacles, inspect |
| sphere | ball | biosphere, hemisphere |
| spir | breathe | respiratory, inspirational |
| sta | stand | stable, stability, stagnant, stationary |
| stell | star | interstellar, constellation, stellar |
| sub | below, under | submarine, subpar |
| super | higher in quality or quantity | superior, supernatural, superfan, superb |
| syn (sym) | with, together | synonym, sympathy |
| tact | to touch | contact, tactile |
| tax | arrangement | syntax, taxonomy, ataxia |
| techn (techno) | art, skill | technologic, technique |
| tele | far | television, telephone, telescope |
| temp | time | contemporary, temporary, tempo |
| term | end, limit | determine, terminate, exterminate, midterm |
| tetra | four | tetrapod, tetrarchy |
| theo (the) | god | theology, monotheism |
| tort | twist | contort, distort, retort |
| tox | poison | toxin, detoxification, toxicology, toxic, intoxicated |
| tract | pull | tractor, subtract, attract, contraction |
| trans | across, through | transform, transaction, translate, transport |
| ultra | beyond, extreme | ultrasonic, ultramodern |
| un | not | unfair, unable, unfriendly, uncontrollable |
| uni | one | unicycle, united, unison |
| urb | city | suburb, urban, urbanology |
| vac | empty | vacuum, vacant, evacuate |
| ven | come | venue, invent, preventative |
| vic (vin) | to win | victory, convince, invincible |
| vid (vis) | see | video, visual, video, visible |
| voc | call | vocalize, vocal |
| vor (vour) | eat | devour, voracious, carnivore, herbivore |
| xen | foreign | xenocide, xenophobic, xenophile |
| zoo | animal | zookeeper, zoology |
