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Word Roots
Medical Terminology
| Term | Definition |
|---|---|
| aden/o | gland |
| log/o | study of |
| path/o | disease |
| scler/o | hardening |
| kerat/o | horny tissue, hard; cornea |
| sudor/o, hidr/o | sweat |
| carcin/o | cancer |
| squam/o | scale |
| sarc/o | flesh, connective tissue |
| necr/o | death |
| hem/o, hemat/o | blood |
| vascul/o | vessel (usually blood or lymph) |
| xen/o | foreign or strange |
| xer/o | dry |
| pil/o , trich/o | hair |
| nas/o | nose |
| pharyng/o | pharynx (throat) |
| pulmon/o | lung |
| thorac/o | chest |
| aer/o | air |
| py/o | pus |
| adenoid/o | adenoid - gland |
| laryng/o | larynx (voice box) |
| trache/o | trachea (windpipe) |
| tonsill/o | tonsils |
| alveol/o | alveolus (plural alveoli) |
| bronchi/o , bronch/o | bronchus (plural bronchi) |
| bronchiol/o | bronchiole |
| pneum/o, pneumon/o | air; lung |
| orth/o | straight |
| phren/o | diaphragm or mind |
| cost/o | ribs |
| emphys/o | inflate |
| spir/o | breathe |
| atel/o | incomplete; imperfect |
| or/o | mouth |
| odont/o, dent/o | teeth |
| somn/o | sleep |
| cyst/o | bladder |
| tom/o | to cut, slice |
| pleur/o | pleura |
| chondr/o | cartilage |
| muc/o | mucus |
| myc/o | fungus |
| arteri/o | artery |
| fibr/o | fiber, fibrous tissue |
| my/o | muscle |
| nat/o | birth |
| arthr/o | joint |
| enter/o | intestine (usually small) |
| thromb/o | blood clot |
| mast/o | breast |
| lith/o | stone, calculus |
| oste/o | bone |
| neur/o | nerve |
| ot/o | ear |
| hepat/o | liver |
| chol/o | bile, gall |
| men/o | menses, menstruation |
| cyt/o | cell |
| anter/o | anterior, front |
| caud/o | tail |
| dist/o | far, farthest |
| dors/o | back (of body) |
| infer/o | lower, below |
| later/o | side, to one side |
| medi/o | middle |
| poster/o | back (of body), behind, posterior |
| proxim/o | near, nearest |
| super/o | upper, above |
| ventr/o | belly, belly side |
| cephal/o | head |
| cervic/o | neck; cervix uteri (neck of the uterus) |
| ili/o | ilium (lateral, flaring portion of hip bone) |
| inguin/o | groin |
| lumb/o | loins (lower back) |
| septic/o | infection |
| fluor/o | luminous, fluorescence |
| adip/o, lip/o, steat/o | fat |
| cutane/o, dermat/o, derm/o | skin |
| hidr/o, sudor/o | sweat |
| ichthy/o | dry, scaly |
| kerat/o | horny tissue; hard; cornea |
| onych/o | nail |