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Root Words
Roots of Medical Terms
| Term | Definition |
|---|---|
| abdomin/o | abdomen |
| acanth/o | thorn, spine |
| acetabul/o | acetabulum |
| acr/o | extremity |
| act/o | do, act |
| aden/o | gland |
| adenoid/o | adenoid |
| adip/o | fat |
| adren/o | adrenal gland |
| agglutin/o | adhere, clump |
| agon/o | struggle |
| alb/o | white |
| algesi/o | pain |
| all/o | different |
| alvelo/o | alveolus (air sac) |
| ambly/o | dull |
| ambul/o | walking |
| amni/o | amnion |
| amyl/o | starch |
| an/o | anus |
| andr/o | male |
| angi/o | (blood) vessel |
| anis/o | unequal |
| ankyl/o | stiff, crooked |
| anter/o | front |
| aort/o | aorta |
| append/o | appendix |
| appendic/o | appendix |
| aquel/o | water |
| arter/o | artery, arteries |
| arteri/o | artery, arteries |
| arteriol/o | arteriole |
| arthr/o | joint |
| articul/o | joint |
| aspir/o | inhaling |
| aspirat/o | inhale, removal |
| atel/o | incomplete, imperfect |
| ather/o | fatty plaque |
| atri/o | atrium |
| audi/o | hearing |
| audit/o | hearing |
| aur/o | ear |
| auri/o | ear |
| axill/o | armpit |
| bacteri/o | bacteria |
| balan/o | glans, penis |
| bar/o | pressure |
| bas/o | base, foundation |
| bi/o | life |
| bil/i | bile, gall |
| blast/o | immature, early-stage cell |
| blephar/o | eyelid |
| brachi/o | arm |
| bronch/o | bronchus |
| bucc/o | cheek |
| burs/o | bursa (small fluid-filled sac) |
| calc/o | calcium |
| calcane/o | calcaneus (heel) |
| carcin/o | cancer |
| canth/o | angle (corner of the eye) |
| capit/o | head |
| capn/o | carbon dioxide |
| capsul/o | capsule |
| carcin/o | cancer |
| cardi/o | heart |
| carp/o | wrist (carpal) |
| caud/o | tail, down |
| caus/o | burn(ing) |
| cec/o | cecum |
| celi/o | abdomen |
| cellul/o | cell |
| centr/o | center |
| cephal/o | head |
| cerebell/o | cerebellum |
| cerebr/o | cerebrum |
| cerumin/o | cerumen (earwax) |
| cervic/o | neck, cervix |
| cheil/o | lip |
| cheir/o | hand |
| chem/o | drug, chemical |
| chil/o | lip |
| chir/o | hand |
| chlor/o | green |
| chol/e | gall, bile |
| cholangi/o | bile duct |
| chondr/o | cartilage |
| chori/o | choroid |
| chrom/o | color |
| chromat/o | color |
| circulat/o | circle shape |
| cirrh/o | orange-yellow |
| cis/o | cut |
| clavicul/o | clavicle |
| cleid/o | clavicle |
| coagul/o | coagulation, clotting |
| cochle/o | cochlea |
| col/o | colon |
| coli/o | colon |
| coll/a | neckline |
| colon/o | colon |
| colp/o | vagina |
| comat/o | deep sleep |
| coni/o | dust |
| consci/o | aware |
| cor/o | pupil |
| core/o | pupil |
| cord/o | cord |
| corne/o | cornea |
| coron/o | heart |
| corpor/o | body |
| cortic/o | cortex |
| cost/o | rib |
| cox/o | hip |
| crani/o | skull |
| crin/o | secrete |
| crur/o | shin, leg |
| cry/o | cold |
| crypt/o | hidden, obscured |
| cubit/o | elbow |
| culd/o | cul-de-sac |
| cutane/o | skin |
| cyan/o | blue |
| cycl/o | ciliary body |
| cyst/l | bladder, cyst |
| cyst/o | bladder, cyst |
| cyt/o | cell |
| dacry/o | tear (duct) |
| dactyl/o | finger or toe |
| dendr/o | tree |
| dent/o | tooth |
| denti/o | tooth |
| derm/o | skin |
| dermat/o | skin |
| dextr/o | right (side) |
| didym/o | testis |
| digit/o | finger, toe |
| dilat/o | expand |
| dips/o | thirst |
| disk/o | disk |
| dist/o | distant from origin |
| dors/i | back, posterior |
| dors/o | back, posterior |
| duct/o | lead |
| duoden/o | duodenum |
| dynam/o | power, force |
| ech/o | (reflected) sound |
| electr/o | electricity |
| embol/o | embolus |
| embry/o | embryo |
| emmetr/o | proportioned, correct measure |
| encephal/o | brain |
| enter/o | (small) intestine |
| erythr/o | red |
| epiglott/o | epiglottis |
| episi/o | vulva |
| erg/o | work |
| erythem/o | redness |
| erythr/o | red |
| esophag/o | esophagus |
| esthesi/o | feeling, sensation |
| estr/o | female |
| faci/o | face |
| fasci/o | band of tissue (fascia) |
| femor/o | thigh bone (femur) |
| fet/o | fetus |
| fibr/o | fiber |
| fibul/o | fubula |
| flex/o | bend |
| fluor/o | light, luminous, fluorine, fluoresce |
| follicul/o | small sac |
| galact/o | milk |
| gangli/o | ganglion |
| ganglion/o | ganglion |
| gastr/o | stomach |
| gen/o | creation, produce |
| ger/o | aging, old age |
| geront/o | aging, old age |
| gigant/o | huge |
| gingiv/o | gums |
| glauc/o | gray |
| gil/o | glue |
| glomerul/o | glomerulus |
| gloss/o | tongue |
| gluc/o | glucose, sugar |
| glyc/o | glucose, sugar |
| gnath/o | jaw |
| gon/o | genitals |
| gonad/o | sex gland |
| goni/o | angle |
| granul/o | granule |
| gyn/o | female, woman |
| gynec/o | femaile, woman |
| halit/o | breath |
| hemangi/o | blood (vessel) |
| hem/o & hemat/o | blood |
| hepat/o | liver |
| hidr/o | sweat |
| hist/o | tissue |
| histi/o | tissue |
| humer/o | humerus |
| hydr/o | water |
| hypn/o | sleep |
| hyster/o | uterus |
| iatr/o | treatment |
| icter/o | jaundice |
| ile/o | illeum |
| immune/o | immunity, safe |
| inguin/o | groin |
| intestin/o | intestine |
| irid/o | iris |
| is/o | equal |
| isch/o | hold back, restrain |
| ischi/o | ischium |
| jaund/o | yellow |
| jejun/o | jejunum |
| kal/i | potassium |
| kary/o | (cell) nucleus |
| kel/o | tumor, growth |
| kerat/o | cornea, horny tissue |
| keton/o | ketone |
| kin/e | movement |
| kyph/o | hump(back) |
| labi/o | lip(s), labia |
| lacrim/o | tear(duct), lacrimal duct |
| lact/o | milk |
| lamin/o | lamina |
| lapar/o | abdomen, loin, or flank |
| laryng/o | larynx (voice box) |
| later/o | side |
| lei/o | smooth |
| lent/i | lens |
| leuk/o | white |
| lingu/o | tongue |
| lip/o | fat |
| lith/o | stone |
| lob/o | lobe |
| log/o | word |
| logad/o | white of the eye |
| lord/o | curve, bending |
| lumb/o | lumbar, lower back |
| lymph/o | lymph |
| mamm/o | breast |
| mandibul/o | mandible (lower jaw) |
| mast/o | breast |
| mastoid/o | mastoid process |
| maxill/o | maxilla (upper jaw) |
| medi/o | middle |
| medull/o | medulla, marrow |
| melan/o | black |
| men/o | menstruation |
| mening/o | meninges, membrane |
| menisc/o | meniscus |
| ment/o | mind |
| mes/o | middle, central |
| metacarp/o | metacarpal (hand bone) |
| metatars/o | metatarsal (foot bone) |
| metr/o | uterus, measure |
| mi/o | less, smaller |
| mit/o | thread |
| muscul/o | muscle |
| my/o | muscle |
| myc/o | fungus |
| myel/o | bone marrow, spinal cord |
| myos/o | mucus |
| narc/o | numbness, stupor |
| nas/o | nose |
| nat/i | birth |
| nat/o | birth |
| natr/o | sodium |
| neur/o | nerve(s), nervous system |
| noct/o | night |
| norm/o | normal, conforms to rule |
| nucle/o | necleus |
| o/o | egg (ovum) |
| obstetr/o | midwife |
| occlus/o | close, obstruct |
| ocul/o | eye(s) |
| odont/o | tooth |
| olecran/o | olecranon (elbow) |
| olfact/o | smell |
| omphal/o | navel |
| onc/o | tumor, mass, (cancerous) |
| onych/o | nail |
| oophor/o | ovary |
| ophry/o | eyebrow |
| ophthalm/o | eye |
| opt/o | eye, vision |
| optic/o | sight, vision |
| or/o | mouth |
| orch/o | testicle |
| orchi/o | testis |
| orchid/o | testicle |
| organ/o | organ |
| orth/o | straight, correct |
| oscill/o | swing |
| oss/eo | bone |
| oss/i | bone |
| ot/o | ear |
| ov/i | egg (ovum) |
| ov/o | egg (ovum) |
| ovari/o | ovary |
| ox/i | oxygen |
| ox/o | oxygen |
| ox/y | oxygen |
| paed/o | child |
| palat/o | palate |
| palpit/o | throb, flutter |
| pancreat/o | pancreas |
| papill/o | nipple, papilla |
| papul/o | papule, pimple |
| patell/o | patella (knee) |
| path/o | disease |
| pecor/o | chest |
| ped/i | child |
| ped/o | child |
| pelv/i | pelvis |
| pelv/o | pelvis |
| pept/o | digest |
| perine/o | perineum |
| peritone/o | peritoneum |
| phac/o | lens (eye) |
| phag/o | eat, ingest |
| phak/o | lens (eye) |
| phalang/o | finger or toe bone (phalanges) |
| phall/o | penis |
| pharmac/o | drug |
| pharyng/o | pharynx, throat |
| phas/o | speech |
| phen/o | show |
| phleb/o | fear, aversion to |
| phon/o | sound, voice |
| phot/o | light |
| phren/o | mind, diaphragm |
| physic/o | function, natural |
| pil/o | hair |
| pineal/o | pineal gland |
| pituitar/o | pituitary (gland) |
| plasm/o | plasma, formative, liquid part of blood |
| pleur/a | pleura, rib, side |
| pleur/o | pleura, rib, side |
| pneumon/o | lung, breath |
| pod/o | foot |
| poli/o | gray |
| poster/o | back, towards back |
| proct/o | anus, rectum |
| prostat/o | prostate (gland) |
| proxim/o | near, proximal to |
| prurit/o | itching |
| psych/o | mind |
| pub/o | pubis |
| pulm/o | lung(s) |
| pulmon/o | lung(s) |
| pupill/o | pupil |
| purpur/o | purple |
| pyel/o | renal pelvis |
| pylor/o | pylorus |
| pyr/o | fever, heat, burning |
| rachi/o | spine |
| radi/o | (x-ray) radiation |
| radicul/o | nerve root |
| rect/o | rectum |
| ren/o | kidney |
| respirat/o | breathing |
| reticul/o | network |
| retin/o | retina |
| rhabd/o | rod shaped |
| rhabdomy/o | striated/skeletal muscle |
| rheumat/o | discharge, flow, joint |
| rhin/o | nose |
| rhytid/o | wrinkle |
| rotat/o | turn, rotate |
| rrhythm/o | rhythm |
| rube/o | red |
| sac/o | sacrum |
| salping/o | fallopian tube |
| sarc/o | flesh |
| scapul/o | scapula (shoulder blade) |
| schiz/o | split, divide |
| scler/o | hard, hardening, sclera |
| sclera/o | hard |
| scoli/o | crooked, bent, twisted |
| scrot/o | scrotum |
| seb/o, sebace/o | oil |
| semin/o | semem |
| sept/o | infection, partition |
| septic/o | infection, putrefying |
| ser/o | serum |
| sial/o | saliva |
| sider/o | iron |
| sigmoid/o | sigmoid colon |
| somat/o | body |
| somn/i | sleep |
| somn/o | sleep |
| son/o | sound |
| sperm/o | spermatozoa |
| spermat/o | spermatozoa |
| spher/o | spherical |
| sphygm/o | pulse |
| spin/o | spine |
| spir/o | breathe |
| splen/o | spleen |
| spondyl/o | vertebra |
| squam/o | squamous (scaly) |
| staped/o | stapes |
| steat/o | fat |
| sten/o | narrow |
| stern/o | sternum (breastbone) |
| steth/o | chest |
| stom/a | mouth, opening |
| stom/o | mouth, opening |
| stomat/o | mouth |
| sud/o | sweat |
| synov/o | synovial membrane |
| tal/o | talus (ankle) |
| tars/o | tarsus (ankle) |
| tempor/o | temple, period of time |
| ten/o | tendon |
| tend/o | tendon |
| tendin/o | tendon |
| terat/o | monster, deformed |
| test/o | testis |
| testicul/o | testis |
| thalam/o | thalamus |
| thel/o | nipple |
| therm/o | heat |
| thorac/o | chest, thorax |
| thromb/o | clot |
| thym/o | thymus gland |
| thry/o | thyroid gland |
| thyroid/o | thyroid gland |
| tibi/o | tibia |
| toc/o | birth, labor |
| tom/o | cut |
| ton/o | tone, tension, pressure |
| tonsill/o | tonsil |
| top/o | place, position, location |
| tors/o | twisted |
| tort/i | twisted |
| tox/o | poison, toxin |
| toxic/o | poison |
| trache/o | trachea |
| trachel/o | neck or neck like |
| tract/o | draw |
| trich/o | hair or hair like |
| trigon/o | trigone |
| troph/o | nourishment, growth |
| tub/o | tube |
| tuss/i | cough |
| tympan/o | middle ear, eardrum |
| uln/o | ulna |
| umbilic/o | navel (umbilicus) |
| ungu/o | nail |
| ur/o | urine, urinary (tract) |
| uran/o | palate |
| ure/a | urine, (urinary tract) |
| ure/o | urine, (urinary tract) |
| ureter/o | ureter |
| ureter/o | urethra |
| urin/o | urine |
| uter/o | uterus |
| uve/o | uvea |
| uvul/o | uvula |
| vag/o | vagus nerve |
| vagin/o | vagina |
| valvul/o | valve |
| varic/o | swollen vein |
| vas/o | vessel, vas deferens |
| vascul/o | (blood) vessel |
| ven/o | vein |
| veni/o | vein |
| venere/o | sexual intercourse |
| ventr/o | front of body, belly |
| ventri/o | front of body, belly |
| verm/i | worm, wormlike |
| vers/o | turn(ing) |
| vertebr/o | vertebra |
| vesic/o | (urinary) bladder |
| vesicul/o | seminal vesicle |
| vir/o | virus |
| viril/o | masculine |
| viscer/o | viscera, internal organs |
| vitre/o | glassy |
| vulv/o | vulva |
| xanth/o | yellow |
| xen/o | strange, foreign matter |
| xer/o | dry |
| xiph/o | sword shape |
| zo/o | animal |
Created by:
kneecole
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