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Selected Word Roots
Selected Word Roots for Medical Terminology
| Term | Definition |
|---|---|
| abdomin | abdomen |
| aden | Gland |
| Adren / adrenal | Adrenal gland |
| Aer | Air; oxygen; gas |
| Alveol | alveolus |
| angi | (Blood) vessel; (lymph) vessel |
| ankyl | Crooked; stiff; bent |
| appendic | appendix |
| arteri, arter | artery |
| arteriol | arteriole (small artery) |
| atrhr | joint |
| ather | Yellowish; fatty plaque |
| Aur | ear |
| aut | self |
| bil | Bile |
| Bio | life |
| Blephar | Eyelid |
| Bronch | airway; bronchus |
| burs | bursa |
| carcin | cancer |
| Cardi | Heart |
| caud | Tail; toward lower part of the body |
| caus | burning sensation; capable of burning |
| cephal | Head |
| Cerebell | Cerebellum |
| Cerebr | Cerebrum; brain |
| cervic | neck; cervix |
| cheil | lip |
| Chiro | Hand |
| cholangi | bile duct |
| chole | gall; bile |
| chondr | Cartilage |
| coccyg | Coccyx; tailbone |
| col | colon; large intestine |
| conjunctiv | conjunctiva |
| corne | cornea |
| coron | heart; crown of head |
| cost | rib |
| crani | cranium; skull |
| cusp | point; cusp |
| cutane | skin |
| cyan | blue |
| cyst | bladder; sac |
| cyt, cyte | Cell |
| dacry | tears; tear duct |
| dactyl | fingers or toes |
| dent | tooth |
| derm | skin |
| dermat | skin |
| dipl | two; double |
| diverticul | diverticulum |
| dors | back (of the body) |
| duoden | duodenum |
| ectop | located away from usual place |
| edema | swelling |
| electr | electricity; electrical activity |
| encephal | brain |
| endocrin | endocrine |
| enter | Intestines (usually small intestine) |
| epiglott | epiglottis |
| epitheli | epithelium |
| erythr | red |
| esophag | esophagus |
| esthesi | sensation; feeling; sensitivity |
| eti | cause (of disease) |
| exocrin | secrete out of |
| faci | face |
| fasci | fascia; fibrous band |
| flexion | bending |
| fract | break; broken |
| galact | milk |
| gastr | stomach |
| genital | pertaining to birth |
| ger | old age; aged |
| geront | old age; aged |
| gingiv | gums |
| glauc | gray |
| gloss | tongue |
| gluc | Sweetness; sugar |
| glyc | sugar; glucose |
| glycos | sugar; glucose |
| gnos | knowledge; a knowing |
| gonad | gonad; sex glands |
| gyn | woman |
| gynec | woman |
| gyr | turning; folding |
| hem | blood |
| hemat | blood |
| hepat | liver |
| hidr | swea |
| hist | tissue |
| hom | same |
| home | sameness; unchanging |
| hydr | water |
| hyster | uterus |
| ile | ileum |
| ili | ilium |
| immun | Immune |
| irid | iris |
| kerat | horny tissue; hard |
| kin | movement |
| kinesi | movement; motion |
| labi | lips |
| lacrim | tear duct;tear |
| lact | milk |
| lapar | abdomen |
| laryng | larynx |
| later | side |
| lei | smooth |
| leuk | white |
| lingu | tongue |
| lip | fat |
| lith | stone; calculus |
| lob | lobe |
| lumb | lumbar; loin region |
| Lymph | lymph |
| macr | abnormal largeness |
| mamm | breast |
| mast | breast |
| Meat | opening of passageway |
| mediastin | mediastinum |
| melan | black |
| men | menstruation |
| mening | meninges |
| ment | mind |
| mes, meso | middle |
| metr | uterus |
| mon | one |
| morbid | disease; sickness |
| muc | mucus |
| my, myos | muscle |
| myc | fungus |
| myel | bone marrow; spinal cord |
| myelon | bone marrow |
| myring | eardrum |
| narc | stupor; numbness |
| nas | nose |
| nat | birth |
| necr | death (cells; body) |
| nephr | kidney |
| neur | nerve |
| noct | night |
| nyct | night |
| nyctal | night |
| ocul | eye |
| onc | tumor |
| onych | nail |
| oophor | ovary |
| Ophthalm | eye |
| or | mouth |
| orth | straight |
| oste | bone |
| ot | ear |
| ox | oxygen |
| palpat | touch; feel; stroke |
| pancreat | pancreas |
| par, part | bear; give birth to; labor |
| parathyroid | Parathyroid |
| path | disease; suffering |
| pector | chest; muscle |
| ped | child; foot |
| pelv | pelvis; pelvic bone |
| pen | penis |
| perine | perineum |
| peritone | peritoneum |
| petr | stone; portion of temporal bone |
| Pham, phak | lens of the eye |
| phag | eat; swallow |
| phalang | finger or toe bone |
| pharyng | pharynx, throat |
| phas | speech |
| phleb | vein |
| phot | light |
| phren | mind |
| physi | nature |
| pleur | pleura |
| pneum | lung; air |
| pneumat | lung; air |
| pneumon | lung; air |
| pod | foot |
| poli | gray matter |
| polyp | polyp; small growth |
| poster | back (of body) |
| prim | first |
| proct | rectum |
| pseud | fake; false |
| psych | mind |
| pulmon | lung |
| py | pus |
| pyel | renal pelvis |
| pylor | pylorus |
| pyr | fever; heat |
| quadr | four |
| rect | rectum |
| ren | kidney |
| retin | retina |
| rhin | Nose |
| sacr | sacrum |
| salping | fallopian (uterine) tube |
| sanit | soundness; health |
| sarc | flesh; connective tissue |
| scler | sclera; white of eye; hard |
| scoli | Crooked; curved |
| seb | sebum; oil |
| seps | infection |
| sept | infection; partition; septum |
| sial | saliva |
| somat | body |
| somn | sleep |
| son | sound |
| sopor | sleep |
| sperm | sperm, spermatozoa, seed |
| spermat | sperm, spermatozoa, seed |
| spher | round; sphere; ball |
| sphygm | pulse |
| spin | spine; backbone to |
| spir | breathe |
| splen | spleen |
| spondyl | Vertebrae; spinal or vertebral column |
| staphyl | grapelike clusters |
| stern | (breastbone) |
| steth | chest (muscles) |
| stoma | mouth; opening |
| stomat | mouth;opening |
| strab | squint; squint-eyed |
| synovi | synovial; synovial membrane |
| system | system |
| ten, tend | tendon |
| tendin | tendon |
| tens, tensi | pressure, force, stretching |
| test | testis; testicle |
| therm | heat |
| thorac | thorax; chest |
| thromb | clot |
| thym | thymus gland; soul |
| thyr | thyroid gland |
| thyroid | thyroid gland |
| tom | cut; section |
| ton | tension; pressure |
| tone | to stretch |
| tonsill | tonsils |
| top | place; position; location |
| tox, toxic | poison; poisonous |
| trach, trache | trachea, windpipe |
| trachel | neck; necklike |
| trich | hair |
| tubercul | little knot; swelling |
| tympan | eardrum; middle ear |
| ulcer | sore; ulcer |
| ungu | nail |
| ur | urine; urinary tract |
| ureter | ureter |
| urethr | urethra |
| uria | urination; urine |
| urin | urine or urinary organs |
| uter | uterus |
| uvul | uvula; little grape |
| vagin | vagina |
| valv | valve |
| valvul | valve |
| vas | vessel; duct |
| vascul | blood vessel; little vessel |
| ven | Vein |
| versicul | seminal vesicles; blister |
| vertebr | vertebra; backbone |
| vesic | urinary bladder |
| vir | poison; virus |
| viril | masculine; manly |
| vis | seeing; sight |
| visc | sticky |
| viscer | viscera; internal organsm |
| viscos | sticky |
| vit | life |
| xanth | yellow |
| xen | strange; foreign |
| xer | dry |
| zygot | joined together |