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| Word prefix, root, or suffix |  |
|
| Meaning | |
|
| af- | toward |
| ante- | before |
| anti- | against, resisting |
| auto- | self |
| bi- | two, double |
| circum- | around |
| co- | with, together |
| con- | with, together |
| contra- | against |
| de- | down from, undoing |
| dia- | across, through |
| dipl- | twofold, double |
| dys- | bad, disordered, difficult |
| ectop- | displaced |
| -al | pertaining to |
| -ac | pertaining to |
| -algia | pain |
| -aps | fit, fasten |
| -apt | fit, fasten |
| -arche | beginning, origin |
| -ase | signifies an enzyme |
| -blast | sprout, make |
| -centesis | a piercing |
| -cide | to kill |
| -clast | break, destroy |
| -crine | release, secrete |
| -ectomy | a cutting out |
| -emesis | vomiting |
| -emia | refers to a blood condition |
| -flux | flow |
| -gen | creates, forms |
| acro- | extremity |
| aden- | gland |
| alveol- | small hollow cavity |
| angi- | vessel |
| arthr- | joint |
| asthen- | weakness |
| bar- | pressure |
| bili- | bile |
| brachi- | arm |
| brady- | slow |
| bronch- | air passage |
| capn- | smoke |
| carcin- | cancer |
| card- | heart |
| cephal- | head, brain |
| cerv- | neck |
| chem- | chemical |
| chol- | bile |
| chondr- | cartilage |
| corp- | body |
| cortico- | pertaining to cortex |
| crani- | skull |
| crypt- | hidden |
| cusp- | point |
| cut(an)- | skin |
| cyan- | blue |
| cyst- | bladder |
| cyt- | cell |
| dactyl- | fingers, toes (digits) |
| dendr- | tree; branched |
| ef- | away from |
| em- | in, into |
| en- | in, into |
| endo- | within |
| epi- | upon |
| eu- | good |
| ex- | out of, out from |
| exo- | out of, out from |
| extra- | outside of |
| hapl- | single |
| hem- | blood |
| hemat- | blood |
| hemi- | half |
| hom(e)o- | same, equal |
| hyper- | over, above |
| hypo- | under, below |
| infra- | below, beneath |
| inter- | between |
| -genesis | creation, production |
| -gram | something written |
| -graphy(y) | to write, draw |
| -hydrate | containing water |
| -ia | condition, process |
| -sia | condition, process |
| -iasis | abnormal condition |
| -ic | pertaining to |
| -ac | pertaining to |
| -in | signifies a protein |
| -ism | signifies "condition of" |
| -itis | signifies "inflammation of" |
| -lemma | rind; peel |
| -lepsy | seizure |
| -lith | stone; rock |
| -logy | study of |
| -luna | moon, moonlike |
| dent- | tooth |
| derm- | skin |
| diastol- | relax; stand apart |
| dips- | thirst |
| ejacul- | to throw out |
| electr- | electrical |
| enter- | intestine |
| eryth(r)- | red |
| esthe- | sensation |
| febr- | fever |
| gastr- | stomach |
| gingiv- | gums |
| glomer- | wound into a ball |
| gloss- | tongue |
| gluc- | glucose, sugar |
| glutin- | glue |
| glyc- | sugar (carbohydrate); glucose |
| hepat- | liver |
| hist- | tissue |
| hydro- | water |
| hyster- | uterus |
| iatr- | treatment |
| kal- | potassium |
| kary- | nucleus |
| kerat- | cornea |
| lact- | milk; milk production |
| lapar- | abdomen |
| leuk- | white |
| lig- | to tie, bind |
| lip- | lipid (fat) |
| intra- | within |
| iso- | same, equal |
| macro- | large |
| mega- | large, million(th) |
| mes- | middle |
| meta- | beyond, after |
| micro- | small; million(th) |
| milli- | thousandth |
| mono- | one (single) |
| neo- | new |
| non- | not |
| oligo- | few, scanty |
| ortho- | straight; correct, normal |
| para- | by the side of; near |
| per- | through |
| -malacia | softening |
| -megaly | enlargement |
| -metric | measurement, length |
| -metry | measurement, length |
| -oid | like; in the shape of |
| -oma | tumor |
| -opia | vision, vision condition |
| -oscopy | viewing |
| -ose | signifies a carbohydrate (especially a sugar) |
| -osis | condition, process |
| -ostomy | formation of an opening |
| -otomy | cut |
| -penia | lack |
| -philic | loving |
| -phobic | fearing |
| -phragm | partition |
| lys- | break apart |
| mal- | bad |
| melan- | black |
| men- | month (monthly) |
| mens- | month (monthly) |
| menstru- | month (monthly) |
| muta- | change |
| my- | muscle |
| myo- | muscle |
| myc- | fungus |
| myel- | marrow |
| nat- | birth |
| natr- | sodium |
| nephr- | nephron, kidney |
| noct- | night |
| nyct- | night |
| ocul- | eye |
| odont- | tooth |
| onco- | cancer |
| ophthalm- | eye |
| orchid- | testis |
| osteo- | bone |
| oto- | ear |
| ov- | egg |
| oo- | egg |
| oxy- | oxygen |
| path- | disease |
| ped- | children |
| phag- | eat |
| pharm- | drug |
| phleb- | vein |
| photo- | light |
| physio- | nature (function) of |
| plex- | twisted; woven |
| pneumo- | air, breath |
| semini | semen testis |
| peri- | around |
| poly- | many |
| post- | after |
| pre- | before |
| pro- | first; promoting |
| quadr- | four |
| re- | back again |
| retro- | behind |
| semi- | half |
| sub- | under |
| super- | over, above, excessive |
| supra- | over, above, excessive |
| trans- | across, through |
| tri- | three; triple |
| -plasia | growth, formation |
| -plasm | substance, matter |
| -plasty | shape, make |
| -plegia | paralysis |
| -pnea | breath, breathing |
| -(r)rhage | breaking out, discharge |
| -(r)rhagia | breaking out, discharge |
| -(r)rhapy | sew, suture |
| -(r)rhea | flow |
| -some | body |
| -tensin | pressure |
| -tension | pressure |
| -tonic | pressure, tension |
| -tripsy | crushing |
| -ule | small, little |
| -uria | refers to urine condition |
| pneumon- | lung |
| pod- | foot |
| poie- | make; produce |
| presby- | old |
| proct- | rectum |
| pseud- | false |
| psych- | mind |
| pyel- | pelvis |
| ren- | kidney |
| rhino- | nose |
| rigor- | stiffness |
| sarco- | flesh; muscle |
| scler- | hard |
| semen- | seed, sperm |
| semin- | seed, sperm |
| sept- | contamination |
| sin- | cavity; recess |
| son- | sound |
| spiro- | breathe |
| spire- | breathe |
| stat- | a standing, stopping |
| stas- | a standing, stopping |
| syn- | together |
| systol- | cotract; stand together |
| tachy- | fast |
| therm- | heat |
| thromb- | clot |
| tox- | poison |
| troph- | grow, nourish |
| tympan- | drum |
| varic- | enlarged vessel |
| vas- | vessel, duct |
| vesic- | bladder, blister |
| y | process, condition |
| bi/o | life |
| auto- | self |
| a-, an | no, not, without |
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