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MedTerm Root Words
Root Words
| Term | Definition |
|---|---|
| cardi/o | heart |
| gastr/o | stomach |
| hepat/o | liver |
| rhin/o | nose |
| cephal/o | head |
| arthr/o | joint |
| my/o | muscle |
| oste/o | bone |
| electr/o | electricity |
| carcin/o | cancer |
| men/o | menstration, menses |
| cutane/o | skin |
| hyster/o | uterus |
| sinus | sinuses |
| angi/o | vessel |
| ventricul | ventricles |
| laryng | voice box |
| muscul/o | muscle |
| neur/o | nerve |
| ophthalm/o | eye |
| scapul/o | shoulder blade |
| abdomin/o | abdomen |
| anter/o | front (side of body) |
| brachi/o | arm |
| caud/o | tail |
| cervic/o | neck |
| chondr/o | cartilage |
| crani/o | skull |
| cubit/o | elbow |
| dist/o | farthest (away from beginning of structure) |
| dors/o | back (side of body) |
| femor/o | femur, thigh bone |
| genit/o | genitals |
| glute/o | buttocks |
| infer/o | below, lower |
| inguin/o | groin |
| later/o | side |
| lumb/o | low back |
| medi/o | middle |
| nas/o | nose |
| orbit/o | eye socket |
| or/o | mouth |
| ot/o | ear |
| patell/o | patella, kneecap |
| proxim/o | nearest (to beginning of structure) |
| pelv/o | pelvis |
| poster/o | back (side of body) |
| thorac/o | chest |
| scapul/o | scapula, shoulder blade |
| spin/o | spine |
| stern/o | sternum, breast bone |
| super/o | above, upper |
| ventr/o | belly (side of body) |
| vertebr/o | vertebra, back bone |
| deep | further below from the surface |
| prone | lie face down |
| superficial | nearer the surface |
| supine | lie face up |
| axillary | underarm area |
| lower extremity | the entire leg |
| plantar | sole of foot |
| palmer | palm of hand |
| popliteal | creased area behind knee |
| trunk | torso (excluding head and extremities) |
| umbilical | region around navel |
| upper extremity | the entire arm |
| aden/o | gland |
| adip/o | fat |
| cyan/o | blue |
| dermat/o | skin |
| derm/o | skin |
| hidr/o | sweat, water |
| kerat/o | keratin, hard, hornlike |
| lip/o | fat |
| melan/o | melanin, black |
| onych/o | nail |
| py/o | pus |
| seb/o | sebum, oil |
| trich/o | hair |
| ungu/o | nail |
| bi/o | life |
| chem/o | chemical |
| cry/o | cold |
| erythr/o | red |
| ichthy/o | scaly |
| leuk/o | white |
| myc/o | fungus |
| necr/o | death |
| scler/o | hard |
| vesic/o | bladder, sac |
| xanth/o | yellow |
| xer/o | dry |
| burs/o | bursa |
| carp/o | carpals (wrist) |
| clavicul/o | clavicle (collar bone) |
| coccyg/o | coccyx (tailbone) |
| cost/o | rib |
| fibul/o | fibula (thinner lower leg bone) |
| humer/o | humorous (upper arm bone) |
| ili/o | ilium (part of pelvis) |
| ischi/o | ischium (part of pelvis) |
| mandibul/o | mandible (lower jaw) |
| maxill/o | maxilla (upper jaw) |
| metacarp/o | metacarpus (hand bones) |
| metatars/o | metatarsus (foot bones) |
| myel/o | bone marrow |
| phalang/o | phalanges (fingers and toes) |
| pub/o | pubis (part of pelvis) |
| radi/o | radius (part of forearm) |
| sacr/o | sacrum |
| spondyl/o | vertebra |
| tars/o | tarsals (ankles) |
| ten/o | tendon |
| tendin/o | tendon |
| tibi/o | tibia (shin, larger lower leg bone) |
| uln/o | ulna (part of forearm) |
| angi/o | vessel |
| aort/o | aorta |
| arteri/o | artery |
| arteriol/o | arteriole |
| ather/o | fatty substance, plaque |
| atri/o | atrium |
| coron/o | heart |
| embol/o | plug |
| isch/o | to keep back |
| phleb/o | vein |
| steth/o | chest |
| thromb/o | clot |
| valv/o | valve |
| valvul/o | valve |
| vari/o | dilated vein |
| vascul/o | blood vessel |
| vas/o | blood vessel |
| ventricul/o | ventricle |
| venul/o | venule |
| esophag/o | esophagus |
| pulmon/o | lung |
| son/o | sound |
| sphygm/o | pulse |
| bas/o | base |
| coagul/o | clotting |
| eosin/o | rosy red |
| erythr/o | red |
| hem/o | blood |
| hema/o | blood |
| lymph/o | lymph |
| neutr/o | neutral |
| cyt/o | cell |
| glyc/o | sugar |
| path/o | disease |
| septic/o | infection |
| adenoid/o | adenoids |
| immun/o | protection |
| lymphaden/o | lymph node |
| lymphangi/o | lymph vessel |
| phag/o | eating |
| splen/o | spleen |
| thym/o | thymus |
| tonsill/o | tonsils |
| cortic/o | cortex |
| system/o | system |
| alveol/o | alveolus, air sac |
| bronch/o | bronchus |
| bronchi/o | bronchus |
| bronchiol/o | bronchiole |
| coni/o | dust |
| lob/o | lobe |
| mediastin/o | mediastinum |
| ox/i | oxygen |
| pleur/o | pleura |
| pneum/o | lung, air |
| pneumon/o | lung |
| spir/o | breathing |
| trache/o | trachea, windpipe |
| arteri/o | artery |
| atel/o | incomplete |
| fibr/o | fibrous |
| orth/o | straight |
| balan/o | glans penis |
| cyst/o | bladder |
| epididym/o | epididymis |
| glomerul/o | glomerulus |
| lith/o | stone |
| nephr/o | kidney |
| orchid/o | testes |
| orchi/o | testes |
| orch/o | testes |
| prostat/o | prostate gland |
| pyel/o | renal pelvis |
| ren/o | kidney |
| semin/i | semen |
| spermat/o | sperm |
| sperm/o | sperm |
| testicul/o | testicle |
| ur/o | urine |
| ureter/o | ureter |
| urethr/o | urethra |
| urin/o | urine |
| vas/o | vas deferens |
| vesicul/o | seminal vesicle |
| albumin/o | albumin |
| azot/o | nitrogen waste |
| bacteri/o | bacteria |
| corpor/o | body |
| crytp/o | hidden |
| glycos/o | sugar, glucose |
| hemat/o | blood |
| noct/i | night |
| olig/o | scanty |
| rect/o | rectum |
| ven/o | vein |
| amni/o | amnion |
| cervic/o | neck, cervix |
| chori/o | chorion |
| colp/o | vagina |
| embry/o | embryo |
| episi/o | vulva |
| fet/o | fetus |
| gynec/o | woman, female |
| lapar/o | abdomen |
| mamm/o | breast |
| mast/o | breast |
| metr/o | uterus |
| nat/o | birth |
| o/o | egg |
| oophor/o | ovary |
| ovari/o | ovary |
| salping/o | fallopian tubes, uterine tubes |
| uter/o | uterus |
| vagin/o | vagina |
| cyst/o | bladder |
| cerebell/o | cerebellum |
| cerebr/o | cerebrum |
| encephali/o | brain |
| medull/o | medulla oblongata |
| mening/o | meninges |
| myel/o | spinal cord |
| pont/o | pons |
| thalam/o | thalamus |
| lumb/o | low back |