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Medical root words
| Root | Meaning |
|---|---|
| abdomin/o | abdomen |
| acous | sound, hearing |
| acus | sound, hearing |
| acro | extremity, end |
| aden/o | gland |
| adip/o | fat |
| adren/o | adrenal gland, epinephrine |
| adrenal/o | adrenal gland |
| adrenocortic/o | adrenal cortex |
| aer/o | air, gas |
| alg/o | pain |
| algi/o | pain |
| algesi/o | pain |
| amnio | amnion |
| amyl/o | starch |
| andr/o | male |
| angi/o | vessel |
| an/o | anus |
| aort/o | aorta |
| arter/o | artery |
| arteri/o | artery |
| arteriol/o | arteriole |
| arthr/o | joint |
| atel/o | incomplete, imperfect |
| atlant/o | atlas |
| atri/o | atrium |
| audi/o | hearing |
| azot/o | nitrogenous compounds |
| bacill/i | bacillus |
| bacill/o | bacillus |
| bacteri/o | bacterium |
| balan/o | glans penis |
| bar/o | pressure |
| bili | bile |
| bio | life |
| blast/o | immature cell, productive cell, embryonic cell |
| blephar/o | eyelid |
| brachi/o | arm |
| bronch/i | bronchus |
| bronch/o | bronchus |
| bronchiol | bronchiole |
| bucc/o | cheek |
| burs/o | bursa |
| calc/i | calcium |
| cali/o | calyx |
| calic/o | calyx |
| carcin/o | cancer, carcinoma |
| cardi/o | heart |
| cec/o | cecum |
| celi/o | abdomen |
| centesis | puncture, tap |
| cephal/o | head |
| cerebell/o | cerebellum |
| cerebr/o | cerebrum |
| cervic/o | neck, cervix |
| cheil/o | lip |
| chem/o | chemical |
| chir/o | hand |
| cholangi/o | bile duct |
| chol/e | bile, gall |
| chol/o | bile, gall |
| cholecyst/o | gallbladder |
| choledoch/o | common bile duct |
| chondr/o | cartilage |
| chori/o | choroid |
| choroid/o | choroid |
| chrom/o | color, stain |
| chromat/o | color, stain |
| chron/o | time |
| clasis | breaking |
| clitor/o | clitoris |
| clitorid/o | clitoris |
| coccy | coccyx |
| coccyg/o | coccyx |
| chocle/o | cochlea |
| col/o | colon |
| colon/o | colon |
| colp/o | vagina |
| copro | feces |
| cor/o | pupil |
| cor/e | pupil |
| corne/o | cornea |
| cortic/o | outer portion, cerebral cortex |
| cost/o | rib |
| crani/o | skull, cranium |
| cry/o | cold |
| crypt/o | hidden |
| cus | sound, hearing |
| cycl/o | ciliary body, ciliary muscle (of the eye) |
| cyst/o | filled sac or pouch, cyst, bladder, urinary bladder |
| cyt/o | cell |
| dacry/o | tear, lacrimal apparatus |
| dacryocyst/o | lacrimal sac |
| dactyl/o | finger, toe |
| dent/o | tooth, teeth |
| dent/i | tooth, teeth |
| derm/o | skin |
| dermat/o | skin |
| dilation | expansion, widening |
| dilatation | expansion, widening |
| duoden/o | duodenum |
| dynam/o | force, energy |
| ectasia | dilation, dilatation, distention |
| ectasis | dilation, dilatation, distention |
| edema | accumulation of fluid, swelling |
| electr/o | electricity |
| embry/o | embryo |
| emesis | vomiting |
| encephal/o | brain |
| endocrin/o | endocrine |
| enter/o | intestine |
| epididym/o | epididymis |
| episi/o | vulva |
| erg/o | work |
| erythr/o- | red. red blood cell |
| erythrocyt/o | red blood cell |
| esophag/o | esophagus |
| fasci/o | fascia |
| fer | carry |
| ferr/i | iron |
| ferr/o | iron |
| fet/o | fetus |
| fibr/o | fiber |
| galact/o | milk |
| gangli/o | ganglion |
| ganglion/o | ganglion |
| gastr/o | stomach |
| gen | origin, formation |
| ger/e | old age |
| ger/o | old age |
| gingiv/o | gum, gingiva |
| gli/o | neuroglia |
| glomerul/o | glomerulus |
| gloss/o | tongue |
| gluc/o | glucose |
| glyc/o | sugar, glucose |
| gnath/o | jaw |
| goni/o | angle |
| graviada | pregnant woman |
| gyn/o | woman |
| gynec/o | woman |
| hem/o | blood |
| hemat/o | blood |
| hepat/o | liver |
| hidr/o | sweat, perspiration |
| hist/o | tissue |
| histi/o | tissue |
| hydr/o | water, fluid |
| hypn/o | sleep |
| hypophysi/o | pituitary, hypophysis |
| hyster/o | uterus |
| iatr/o | physician |
| ile/o | ileum |
| ili/o | ilium |
| immun/o | immunity, immune system |
| in/o | fiber, muscle fiber |
| insul/o | pancreatic islets |
| ir | iris |
| irit/o | iris |
| irid/o | iris |
| jejun/o | jejunum |
| kali | potassium |
| kary/o | nucleus |
| kerat/o | cornea, keratin, horny layer of skin |
| kin/o | movement |
| kine | movement |
| kinesi/o | movement |
| kinet/o | movement |
| labi/o | lip |
| labyrinth/o | labyrinth (inner ear) |
| lacrim/o | tear, lacrimal apparatus |
| lact/o | milk |
| lapar/o | abdominal wall |
| laryng/o | larynx |
| lent/i | lens |
| leuk/o | white, colorless, white blood cell |
| leukocyt/o | white blood cell |
| lingu/o | tongue |
| lip/o | fat, lipid |
| listhesis | slipping |
| lith | calculus, stone |
| lumb/o | lumbar region, lower back |
| lymphaden/o | lymph node |
| lymphangi/o | lymph vessel |
| lymph/o | lymph, lymphatic system, lymphocyte |
| lymphycyt/o | lymphocyte |
| lysis | separation, loosening, dissolving, distruction |
| malacia | softening |
| mamm/o | breast, mammary gland |
| mania | excited state, obsession |
| mast/o | breast, mammary gland |
| medull/o | innter part, medulla oblongata, spinal cord |
| melan/o | dark, black, melanin |
| mening/o | meninges |
| meninge/o | meninges |
| men/o | month, mensturation |
| mens | month, mensturation |
| metr/o | measure |
| metr/o | uterus |
| metr/i | uterus |
| morph/o | form, structure |
| muc/o | mucus, mucous membrane |
| muscul/o | muscle |
| myc/o | fungus, mold |
| myel/o | bone marrow, spinal cord |
| my/o | muscle |
| myring/o | tympanic membrane |
| myx/o | mucus |
| narc/o | stupor, unconciousness |
| nas/o | nose |
| nat/i | birth |
| natri | sodium |
| necrosis | death of tissue |
| nephr/o | kidney |
| neur/o | nervous system, nerve |
| neur/i | nervous system, nerve |
| noct/i | night |
| nucle/o | nucleus |
| nyct/o | night, darkness |
| ocul/o | eye |
| odont/o | tooth, teeth |
| onc/o | tumor |
| onych/o | nail |
| oo | ovum |
| oophor/o | ovary |
| ophthalm/o | eye |
| opt/o | eye, vision |
| orchid/o | testis |
| orchi/o | testis |
| or/o | mouth |
| osche/o | scrotum |
| osm/o | smell |
| oste/o | bone |
| ot/o | ear |
| ovari/o | ovary |
| ov/o | ovum |
| ovul/o | ovum |
| ox/y | oxygen, sharp, acute |
| palat/o | palate |
| palpebr/o | eyelid |
| pancreat/o | pancreas |
| papill/o | nipple |
| para | woman who has given birth |
| parathyr/o | parathyroid |
| parathyroid/o | parathyroid |
| paresis | partial paralysis, weakness |
| path/o | disease, any disease of |
| ped/o | foot, child |
| pelvi/o | pelvis |
| perine/o | perineum |
| periton | peritoneum |
| peritone/o | peritoneum |
| phac/o | lens |
| phak/o | lens |
| phag/o | eat, ingest |
| pharm | drug, medicine |
| pharmac/o | drug, medicine |
| pharyng/o | pharynx |
| phil/o | attracting, absorbing |
| phleb/o | vein |
| phobia | fear |
| phon/o | sound, voice |
| phot/o | light |
| phren/o | diaphragm |
| phrenic/o | phrenic nerve |
| phyt/o | plant |
| pituitar/i | pituitary, hypophysis |
| plas | formation, modling, development |
| pleur/o | pleura |
| pneum/o | air, gas, lung, respiration |
| pneumat/o | air, gas, lung, respiration |
| pneumon/o | lung |
| pod/o | foot |
| proct/o | rectum |
| prostat/o | prostate |
| prote/o | protein |
| psych/o | mind |
| ptosis | dropping, downward displacement, prolapse |
| ptysis | spitting |
| puer | child |
| pulm/o | lung |
| pulmon/o | lung |
| pupill/o | pupil |
| pyel/o | renal pelvis |
| pylor/o | pylorus |
| py/o | pus |
| pyr/o | fever, fire |
| pyret/o | fever, fire |
| rachi/o | spine |
| radicul/o | root of spinal nerve |
| radi/o | radiation, x-ray |
| rect/o | rectum |
| ren/o | kidney |
| reticul/o | network |
| retin/o | retina |
| rhabd/o | rod, muscle cell |
| rhin/o | nose |
| sacchar/o | sugar |
| sacr/o | sacrum |
| salping/o | tube, uterine tube, auditory (eustachian) tube |
| schisis | fissure |
| scler/o | hard, sclera (of eye) |
| slcerosis | hardening |
| seb/o | sebum, sebaceous gland |
| semin | semen |
| sept/o | septum, partition, dividing, wall |
| sial/o | saliva, salivary gland, salivary duct |
| sider/o | iron |
| sigmoid/o | sigmoid colon |
| skelet/o | skeleton |
| somat/o | body |
| somn/i | sleep |
| somn/o | sleep |
| son/o | sound, ultrasound |
| spasm | sudden contraction, cramp |
| sperm/i | semen, spermatozoa |
| spermat/o | semen, spermatozoa |
| sphygm/o | pulse |
| spir/o | breathing |
| splen/o | spleen |
| spondyl/o | vertebra |
| staped/o | stapes |
| stapedi/o | stapes |
| stasis | suppression, stoppage |
| steat/o | fatty |
| stenosis | narrowing, constriction |
| steth/o | chest |
| sthen/o | strength |
| stoma | mouth |
| stomat/o | mouth |
| synov/i | synovial joint, synovial membrane |
| tax/o | order, arrangement |
| ten/o | tendon |
| tendin/o | tendon |
| terat/o | malformed fetus |
| test/o | testis, testicle |
| thalam/o | thalamus |
| therm/o | heat, temperature |
| thorac/o | chest, thorax |
| thromb/o | blood clot |
| thrombocyt/o | platelet, thrombocyte |
| thym/o | thymus gland |
| thyr/o | thyroid |
| thyroid/o | thyroid |
| toc/o | labor |
| ton/o | tone |
| tonsil/o | tonsil |
| tox/o | poison, toxin |
| toxic/o | poison, toxin |
| trache/o | trachea |
| trich/o | hair |
| trop/o | turning |
| trop | act(ing) on, affect(ing) |
| troph/o | feeding, growth, nourishment |
| tympan/o | tympanic cavity (middle ear), tympanic membrane |
| ureter/o | ureter |
| urethr/o | urethra |
| ur/o | urine, urinary tract |
| urin/o | urine |
| uter/o | uterus |
| uve/o | uvea (of eye) |
| uvul/o | uvula |
| vagin/o | sheath, vagina |
| valv/o | valve |
| valvul/o | valve |
| varic/o | twisted and swollen vein, varix |
| vascul/o | vessel |
| vas/o | vessel, duct, vas deferens |
| ven/o | vein |
| ven/i | vein |
| ventricul/o | cavity, ventricle |
| vertebr/o | vertebra, spinal column |
| vesic/o | urinary bladder |
| vesicul/o | seminal vesicle |
| vestibul/o | vestibule. vestibular apparatus (of ear) |
| vir/o | virus |
| vulv/o | vulva |
| xen/o | foreign, strange |
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