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Word Roots
All Word Parts from the Study Notes Sheet
| Term | Definition |
|---|---|
| adomin/o | abdomen |
| acr/o | extemities |
| aden/o | gland |
| adenoid/o | adenoids |
| adip/o | fat |
| aden/o | adrenal glands |
| adrenal/o | adrenal glands |
| albumin/o | albumin |
| alveo/o | alveoulous; air sac |
| ambly/o | dull or dim |
| amni/o | ammion |
| an/o | anus |
| angi/o | vessel |
| anter/o | front (side of body) |
| aort/o | aorta |
| append/o | appendix |
| appendic/o | appendix |
| arteri/o | artery |
| anteriol/o | arteriole |
| arthr/o | joint |
| atel/o | incomplete |
| ather/o | fatty substance, plaque |
| atri/o | atrium |
| audi/o | hearing |
| audit/o | hearing |
| aur/o | ear |
| azot/o | nitrogen waste |
| bacteri/o | bacteria |
| balan/o | glans penis |
| bas/o | base |
| bi/o | life |
| blephar/o | eyelid |
| brachi/o | arm |
| bronch/o | bronchus |
| bronchi/o | bronchus |
| bronchiol/o | bronchiole |
| burs/o | bursa |
| carcin/o | cancer |
| cardi/o | heart |
| carp/o | carpals (wrist) |
| caud/o | tail |
| cephal/o | head |
| cerebell/o | cerebellum |
| cerebr/o | cerebrum |
| cervic/o | neck, cervix |
| chol/o | bile |
| cholangi/o | bile duct |
| cholecyst/o | gallbladder |
| choledoch/o | common bile duct |
| chondro/o | cartilage |
| chori/o | chorion |
| choroid/o | choroid layer |
| clavicul/o | clavicle (collar bone) |
| coagul/o | clotting |
| coccyg/o | coccyx (tailbone) |
| cochle/o | cochlea |
| col/o | colon |
| colon/o | colon |
| colp/o | vagina |
| coni/o | dust |
| conjunctiv/o | conjunctiva |
| core/o | pupil |
| corne/o | cornea |
| coron/o | heart |
| corpor/o | body |
| cortic/o | cortex |
| cost/o | rib |
| crani/o | skull |
| crin/o | secrete |
| cry/o | cold |
| crypt/o | hidden |
| cubit/o | elbow |
| cutane/o | skin |
| cyan/o | blue |
| cycl/o | ciliary body |
| cyst/o | bladder |
| cyst/o | sac |
| cyt/o | sac |
| cyt/o | cell |
| dacry/o | tears |
| derm/o | skin |
| dermat/o | skin |
| dipl/o | double |
| dist/o | farthest (away from the beginning of structure) |
| diverticul/o | diverticulum |
| dors/o | back (side of body) |
| duoden/o | duodenum |
| electr/o | electricity |
| embol/o | plug |
| embry/o | embryo |
| encephal/o | brain |
| enter/o | intestine |
| eosin/o | rosy red |
| epididym/o | epididymis |
| epiglott/o | epiglottis |
| episi/o | vulva |
| erythr/o | red |
| esophag/o | esophagus |
| femor/o | femur (thigh bone) |
| fet/o | fetus |
| fibr/o | fibrous |
| fibul/o | fibula (thinner lower leg bone) |
| gastr/o | stomach |
| genit/o | genitals |
| glomerul/o | glomerulus |
| glute/o | buttocks |
| glycos/o | sugar, glucose |
| gynec/o | woman, female |
| hem/o | blood |
| hemat/o | blood |
| hepat/o | liver |
| hidro/o | sweat |
| humer/o | humerus (upper arm bone) |
| hydr/o | water |
| hyster/o | uterus |
| ile/o | ileum |
| ili/o | ilium (part of pelvis) |
| immun/o | protection |
| infer/o | below, lower |
| inguin/o | groin |
| ir/o | iris |
| irid/o | iris |
| isch/o | to keep back |
| ischi/o | ischium (part of pelvis) |
| jejun/o | jejunum |
| kerat/o | keratin, hard , hornlike, cornea |
| kyph/o | hump |
| lacrim/o | tears |
| lapar/o | abdomen |
| laryng/o | larynx (voice box) |
| later/o | side |
| leuk/o | white |
| lip/o | fat |
| lith/o | stone |
| lob/o | lobe |
| lord/o | bent backward |
| lumb/o | low back |
| lymph/o | lymph |
| lymphaden/o | lymph node |
| lymphangi/o | lymph vessel |
| mamm/o | breast |
| mandibul/o | mandible (lower jaw) |
| mast/o | breast |
| maxill/o | maxilla (upper jaw) |
| medi/o | middle |
| mediastin/o | mediastinum |
| medull/o | medulla oblongata |
| melan/o | melanin, black |
| men/o | mensus, menstruation |
| mening/o | meninges |
| metacarp/o | metacarpus (hand bones) |
| metatars/o | metatarsus (foot bone) |
| metr/o | uterus |
| muscul/o | muscle |
| my/o | muscle |
| myc/o | fungus |
| myel/o | bone marrow, spinal cord |
| myring/o | tympanic membrane (eardrum) |
| nas/o | nose |
| nat/o | birth |
| nephr/o | kidney |
| neur/o | nerve |
| neutr/o | neutral |
| noct/o | night |
| o/o | egg |
| ocul/o | eye |
| olig/o | scanty |
| onych/o | nail |
| oophor/o | ovary |
| ophtalm/o | eye |
| opt/o | eye, vision |
| or/o | mouth |
| orbit/o | eye socket |
| orch/o | testes |
| orchi/o | testes |
| orchid/o | testes |
| orth/o | straight |
| oste/o | bone |
| ot/o | ear |
| ovari/o | ovary |
| ox/o | oxygen |
| pancreat/o | pancreas |
| parathyroid/o | parathyroid gland |
| patell/o | patella (knee cap) |
| path/o | disease |
| pelv/o | pelvis |
| phac/o | lens |
| phag/o | eating |
| phalang/o | phalanges (fingers and toes) |
| pharyng/o | pharynx (throat) |
| phleb/o | vein |
| phot/o | light |
| pineal/o | pineal gland |
| pituitar/o | pituitary gland |
| pleur/o | pleura |
| pneum/o | lung, air |
| pneumon/o | lung |
| polyp/o | polyps |
| pont/o | pons |
| poster/o | back (side of body) |
| proct/o | rectum and anus |
| prostat/o | prostate gland |
| proxim/o | nearest (to beginning of structure) |
| pub/o | pubis (part of pelvis) |
| pulmon/o | lung |
| pupil/o | pupil |
| py/o | pus |
| pyel/o | renal pelvis |
| radi/o | radius (part of the forearm) |
| rect/o | rectum |
| ren/o | kidney |
| retin/o | retina |
| rhin/o | nose |
| sacr/o | sacrum |
| salping/o | fallopian tubes, uterine tubes |
| scapul/o | scapula (shoulder blade) |
| scler/o | sclera |
| scoli/o | crooked, bent |
| seb/o | sebum, oil |
| semin/o | semen |
| septic/o | infection |
| sigmoid/o | sigmoid colon |
| sinus/o | sinus |
| son/o | sound |
| sperm/o | sperm |
| spermat/o | sperm |
| sphygm/o | pulse |
| spin/o | spine |
| spir/o | breathing |
| splen/o | spleen |
| spondyl/o | vertebra |
| stern/o | sternum (breast bone) |
| steth/o | chest |
| super/o | above, upper |
| system/o | system |
| tars/o | tarsals (ankle) |
| ten/o | tendon |
| tendin/o | tendon |
| testicul/o | testes |
| testicul/o | testicle |
| thalam/o | thalamus |
| thorac/o | chest |
| thromb/o | clot |
| thym/o | thymus, thymus gland |
| thyr/o | thyroid gland |
| thyroid/o | thyroid gland |
| tibi/o | tibia (shin, larger lower leg bone) |
| ton/o | tension, pressure |
| tonsil/o | tonsils |
| toxic/o | poison |
| trache/o | trachea (windpipe) |
| trich/o | hair |
| tympan/o | tympanic membrane (eardrum) |
| uln/o | ulna (part of forearm) |
| ungu/o | nail |
| ur/o | urine |
| ureter/o | ureter |
| urethr/o | urethra |
| urin/o | urine |
| uter/o | uterus |
| vagin/o | vaina |
| valv/o | valve |
| valvul/o | valve |
| varic/o | dilated vein |
| vas/o | blood vessel (vas deferens) |
| vascul/o | blood vessels |
| ven/o | vein |
| ventr/o | belly (side of body) |
| ventricul/o | ventricle |
| venul/o | venule |
| vertebr/o | vertebra, back bone |
| vesicul/o | seminal vesicle |
| vitre/o | glassy |
| xanth/o | yellow |
| xer/o | dry |