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ROOT WORDS
Medical Terminology
| Term | Definition |
|---|---|
| arthr/o | joint |
| cardi/o | heart |
| enter/o | small intestine |
| gastro/ | stomach |
| hepat/o hepatic/o | liver |
| neur/o | nerve |
| hem/o hemat/o | blood |
| my/o muscul/o myos/o | muscle |
| angi/o vas/o vascul/o | vessel (most commonly blood vessel) |
| derm/o dermat/o cutane/o | skin |
| pnuem/o pneumon/o pneumat/o | air/lungs |
| gen/o | creation, cause |
| hydr/o | water |
| morph/o | change |
| myc/o | fungus |
| necr/o | death |
| orth/o | straight |
| path/o | suffering, disease |
| phag/o | eat |
| plas/o | formation |
| py/o | pus |
| scler/o | hard |
| sten/o | narrowing |
| troph/o | nourishment, development |
| xen/o | foreign |
| ocul/o opthalm/o opt/o | eye |
| lacrim/o dacry/o | tear |
| blephar/o | eyelid |
| corne/o kerat/o | cornea |
| conjunctiv/o | conjunctiva |
| scler/o | sclera (white of the eye) |
| vitre/o | vitreous liquid |
| cycl/o | ciliary body |
| retin/o | retina |
| ir/o irid/o | iris |
| phac/o phak/o | lens |
| aurl/o ot/o | ear |
| acous/o audi/o | sound, hearing |
| cerumin/o | ear wax |
| salping/o | eustachian tube |
| tympan/o myring/o | ear drum |
| mastoid/o | mastoid process |
| labyrinth/o | labyrinth |
| vestibul/o | vestibule |
| cochle/o | cochlea |
| ankyl/o | stiff, bent |
| brachi/o | arm |
| burs/o | bursa |
| carp/o | wrist |
| cervic/o | neck |
| chondr/o | cartilage |
| cost/o | rib |
| crani/o | head, skull |
| fasci/o | fascia |
| femor/o | femur |
| kinesi/o | movement/motion |
| lumb/o | loin, lower back |
| oste/o | bone |
| spondyl/o | vertebra |
| tars/o | ankle |
| tax/o | arrangement, order, coordination |
| tibi/o | tibia |
| ton/o | tone, tension |
| cephal/o | head |
| cerebell/o | cerebellum |
| dur/o | tough, outer membrane around brain and spinal cord |
| encephal/o | brain |
| esthesi/o | feeling, sensation |
| gangli/o | nerve bundle |
| gnosi/o | know |
| hypn/o somn/o somn/i | sleep |
| lob/o | lobe |
| mening/o meningi/o | meninges |
| myel/o | spinal cord, bone marrow |
| phasi/o | speech |
| phren/o | mind |
| aden/o | gland |
| adren/o adrenal/o | adrenal gland |
| cortic/o | outer surface |
| crin/o | secrete |
| gluc/o glucos/o glyc/o | sugar |
| gonad/o | gonads (sex organs) |
| hormon/o | hormone |
| hypophys/o pituitar/o | pituitary gland |
| ket/o | ketone body |
| pancreat/o | pancreas |
| thym/o | thymus |
| thyr/o | thyroid |
| coagul/o | coagulation |
| cyt/o | cell |
| immun/o | immune system |
| leuk/o | white |
| lymph/o | lymph |
| phleb/o ven/o | vein |
| splen/o | spleen |
| thromb/o | clot |
| tonsill/o | tonsils |
| aort/o | aorta |
| arteri/o | artery |
| ather/o | fatty plaque |
| atri/o | atrium (upper chamber) |
| coron/o | heart (crown) |
| sept/o | septum (plural = septa) |
| valvul/o | valve |
| ventricul/o | ventricle (lower chamber) |
| adenoid/o | adenoid |
| bronch/o bronchi/o | bronchus |
| bronchiol/o | bronchiole |
| capn/o carb/o | carbon dioxide |
| laryng/o | larynx |
| nas/o rhin/o | nose |
| ox/o | oxygen |
| pector/o thorac/o | chest |
| pharyng/o | pharynx |
| phren/o | diaphragm |
| pleur/o | pleura |
| pulmon/o | lungs |
| sept/o | septum |
| sin/o sinus/o | sinus |
| spir/o | breathing |
| trache/o | trachea |
| abdomin/o celi/o lepar/o | abdomen |
| an/o | anus |
| bil/i chol/e | bile |
| col/o colon/o | colon |
| cyst/o | bladder |
| dent/o odont/o | tooth |
| doch/o | duct |
| duoden/o | duodenum |
| esophag/o | esophagus |
| gingiv/o | gums |
| gloss/o lingu/o | tongue |
| ile/o | ileum |
| jejun/o | jejunum |
| or/o | mouth |
| peritone/o | peritoneum |
| proct/o | anus & rectum |
| rect/o | rectum |
| sial/o | saliva |
| sigmoid/o | sigmoid colon |