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Combining Forms
Medical Combining Forms
| Question | Answer |
|---|---|
| aden/o | gland, in relationship to a gland |
| adenoid/o | adenoid, pharyngeal tonsil |
| acous/o | hearing |
| adip/o | fat |
| abdomin/o | abdomen |
| acetabul/o | hip socket |
| acr/o | height, extremes, extremities, top |
| adren/o, adrenal/o | adrenal gland |
| albin/o, alb/o | white |
| albumin/o | albumin, protein |
| aliment/o | nutrition |
| alveol/o | alveolus, small sac |
| ambly/o | dim, dull |
| ambul/o | walking |
| amni/o | amnion, inner fetal sac |
| amyl/o | starch |
| an/o | anus |
| andr/o | male |
| andren/o, adrenal/o | adrenal gland |
| angi/o | vessel |
| ankl/o | bent, fused, stiffening |
| anter/o | front |
| anthrop/o | man |
| antr/o | antrum, cavity |
| aort/o | aorta |
| aphth/o | ulceration |
| aponeur/o | tendon type |
| append/o, appendic/o | vermiform appendix, that which is added |
| aque/o | water |
| arche/o | first |
| arter/o, arteri/o | artery |
| arteriol/o | arteriole |
| arthr/o | joint, articulation |
| articul/o | articulation, joint |
| astr/o | star |
| atel/o | incomplete |
| ather/o | fatty plaque |
| atri/o | atrium |
| audi/o | hearing |
| auricul/o, aur/o | ear |
| aut/o | self |
| axill/o | axilla, armpit |
| az/o, azot/o | urea, nitrogen |
| bacteri/o | bacteria |
| balan/o | glans penis |
| bartholin/o | bartholin gland |
| bas/o | base, bottom |
| bi/o | life, living |
| bil/i | bile, gall |
| bilirubin/o | bile pigment |
| blephar/o | eyelid |
| bol/o | to throw, throwing |
| brachi/o | arm |
| bronch/o, bronchi/o | bronchus |
| bronchiol/o | bronchiole |
| bucc/o | cheek |
| bunion/o | bunion |
| burs/o | fluid-filled sac, bursa |
| calc/o, calc/i | calcium |
| calcul/o | calculus, stone |
| cali/o, calic/o, calyc/o | calyx |
| capit/o | head |
| capn/o | carbon dioxide |
| carcin/o | cancer |
| carp/o | carpals, wrist bone |
| cardi/o | heart |
| caud/o | tail |
| cauter/o, cauter/i | burn, burning |
| cec/o | cecum |
| celi/o | abdomen |
| cellul/o | cell |
| cephal/o | head |
| cerebell/o | cerebellar peduncles, cerebellum |
| cerebr/o | cerebrum |
| cerumin/o | cerumen, ear wax |
| cervic/o | neck, cervix |
| cheil/o | lips |
| chir/o, cheir/o | hand |
| chlor/o | green |
| chol/e | gall, bile |
| cholangi/o | bile vessel, bile duct |
| cholecyst/o | gallbladder |
| choledoch/o | common bile duct |
| cholester/o | cholesterol |
| chondr/o | cartilage |
| chori/o, chorion/o | chorion, outer fetal sac |
| choroid/o | choroid |
| chromat/o, chrom/o | color |
| chym/o | juice |
| cirrh/o | orange-yellow |
| claustro/o | a closing |
| clavic/o, clavicul/o | clavicle, collar bone |
| coccyg/o, coccig/o | coccyx, tailbone |
| cochle/o | cochlea |
| col/o, colon/o | colon |
| colp/o | vagina |
| con/o | cone |
| condyl/o | condyle, knob |
| coni/o | dust |
| conjunctiv/o | conjunctiva |
| cor/o | pupil |
| cord/o | cord |
| cordi/o | heart |
| corne/o | cornea |
| coron/o | heart, crown |
| corp/o, corpor/o | body |
| cortic/o | cortex, outer portion |
| cost/o | rib |
| crani/o | cranium, skull |
| crin/o | secrete, to secrete |
| crur/o | leg |
| cry/o | extreme cold |
| crypt/o | hidden |
| culd/o | cul-de-sac, rectourine pouch |
| cutane/o | skin |
| cyan/o | blue |
| cycl/o | recurring, round, ciliary body |
| cyst/o | bladder |
| cyt/o | cell |
| dacry/o | tear |
| dacryocyst/o | pertaining to the lacrimal sac |
| dactyl/o | fingers, toes |
| dent/i | tooth |
| derm/o, dermat/o | skin |
| dextr/o | right, right side |
| diaphragm/o, diaphragmat/o | diaphragm |
| digit/o | digit (finger or toe) |
| dipl/o | double |
| dips/o | thirst |
| disc/o | intervertebral disc |
| dist/o | distant, far, intervertebral disc |
| diverticul/o | diverticulum, pouch |
| dors/o | back of body |
| duoden/o | duodenum |
| dur/o | hard, dura mater |
| electro/o | electricity |
| encephal/o | brain |
| endocardi/o | endocardium |
| endometri/o | endometrium |
| enter/o | small intestine |
| eosin/o | rosy, dawn-colored |
| epicondyl/o | epicondyle |
| epididym/o | epididymis |
| epiglott/o | epiglottis |
| episi/o | vulva |
| epitheli/o | epithelium |
| erythr/o, erythem/o | red |
| erythrocyt/o | red blood cell |
| eschar/o | scab, necrotic tissue |
| esophag/o | esophagus |
| essi/o, esthesi/o | sensation, feeling |
| estr/o | female |
| faci/o | face |
| fasci/o | fascia |
| femor/o | femoral, thighbone |
| fet/o | fetus |
| fibr/o | fiber |
| fibrin/o | fibrous substance |
| fibul/o | fibula |
| flex/o | to bend, bending |
| fluor/o | to flow, flowing |
| follicul/o | follicle |
| front | front |
| galact/o | milk |
| gangli/o, ganglion/o | ganglion |
| gastr/o | stomach |
| gen/o | origin |
| ger/o | aging |
| gingiv/o | gum |
| glauc/o | gray bluish-green |
| gli/o | glue, glial cell |
| glomerul/o | glomerulus |
| gloss/o | tongue |
| gluc/o, glyc/o, glycos/o | sugar, glucose |
| gnos/o | knowledge |
| gonad/o | gonad, sex organ, ovaries and testes |
| goni/o | angle |
| granul/o | small grain |
| gravid/o | pregnancy, gestation |
| gyn/o, gynec/o | female |
| halit/o | breath |
| hedon/o | pleasure |
| hemat/o, hem/o | blood |
| hemorrhoid/o | hemorrhoid |
| hepat/o | liver |
| herni/o | hernia, herniation |
| heter/o | different |
| hiat/o | an opening |
| hidr/o | sweat |
| hidraden/o | sweat (sudoriferous) gland |
| hil/o | hilum |
| hist/o | tissue |
| home/o | same, constant |
| hormon/o | hormone |
| humer/o | humerus (upper arm bone) |
| humor/o | liquid |
| hydr/o | water, fluid |
| hymen/o | hymen |
| hypophys/o | hypophysis, pituitary gland |
| hyster/o | uterus |
| iatr/o | treatment |
| ichthy/o | dry, scaly, fishlike |
| ile/o | ileum |
| ili/o | ilium (upper pelvic bone) |
| immun/o | immune, safety, protection |
| inguin/o | groin |
| interstit/o, interstit/i | space between |
| ir/o, irid/o | iris |
| intestin/o | intestines |
| is/o | equal |
| isch/o | to hold back |
| ischi/o | to hold back, to suppress, to restrain, ischium (posterior pelvic bone) |
| jaund/o | yellow |
| jejun/o | jejunum |
| kal/i | potassium |
| kary/o | nucleus |
| kerat/o | hard, cornea |
| ketone/o | ketones |
| kinesi/o | movement |
| klept/o | to steal |
| kyph/o | hump-back, round-back |
| labi/o | labia, lips |
| labyrinth/o | labyrinth, inner ear |
| lacrim/o | tears |
| lact/o | milk |
| lamin/o | lamina |
| lapar/o | abdomen |
| laryng/o | larynx, voice box |
| later/o | side |
| leuk/o | white |
| leiomy/o | visceral, smooth muscle |
| leukocyt/o | white blood cell |
| lex/o | word, speech |
| ligament/o | ligament |
| ligat/o | tying, to tie |
| lingu/o | tongue |
| lip/o | lipid, fat |
| lith/o | stone, calculus |
| lob/o | lobe, section |
| lord/o | swayback, curve |
| lumb/o | lower back, |
| lumin/o | lumen |
| lute/o | yellow |
| lymph/o, lymphat/o | lymph |
| lymphaden/o | lymph gland |
| macul/o | macula, spot |
| malleol/o | malleolus |
| mamm/o | breast |
| man/o | scanty, pressure |
| mandibul/o | mandible (lower jawbone) |
| mast/o | breast |
| mastoid/o | mastoid process |
| maxill/o | maxilla, (upper jawbone) |
| meat/o | meatus, an opening |
| medi/o | middle |
| mediastin/o | mediastinum |
| melan/o | black, dark, melanin |
| men/o, menstru/o | menstruation, menses, month |
| mening/o, meningi/o | meninges |
| menisc/o, menisci/o | meniscus |
| ment/o | mind |
| metacarp/o | metacarpals, hand |
| metatars/o | metatarsals, foot |
| metr/o, metri/o | uterus, measure |
| mon/o | one |
| morph/o | shape |
| muc/o | mucus |
| my/o, muscul/o, myos/o | muscle |
| myc/o | fungus |
| myel/o | bone marrow, spinal cord |
| myocardi/o | myocardium |
| myring/o | ear drum |
| myx/o | mucus |
| narc/o | sleep, stupor |
| nas/o | nose |
| nat/a, nat/i, nat/o | birth, born |
| natr/o | sodium |
| necr/o | death |
| nephr/o | kidney |
| neur/o | nerve |
| neutr/o | neutral |
| noct/i | night |
| nod/o | knot |
| nuch/o | neck |
| nucle/o | nucleus |
| nyct/o | night |
| o/o | ovum |
| occipit/o | occiput |
| ocul/o | eye |
| odont/o | tooth |
| olecran/o | olecranon, elbow |
| olig/o | few, scanty |
| omphal/o | umbilicus |
| onc/o | tumor |
| onych.o | nail |
| oo/o | egg |
| oophor/o | ovary |
| ophthalm/o | eye |
| opt/o, optic/o | eye, vision |
| or/o | mouth |
| orch/i, orchi/o, orch/o, orchid/o | testicle, testis |
| organ/o | organ, organic |
| orth/o | straight, upright |
| osm/o | sense of smell |
| ossicul/o | ossicle, tiny bones |
| oste/o, oss/i, osse/o | bone |
| ot/o | ear |
| ov/o | egg |
| ovari/o | ovary |
| ovul/o, ov/i | ovulation, ovum, egg |
| ox/i, ox/o, oxy/o | oxygen |
| pachy/o | thick |
| palat/o | palate |
| palpebr/o | eyelid |
| pancreat/o | pancreas |
| papill/o | optic nerve, papilla, nipple, optic disc |
| papul/o | papule, pimple |
| parathyroid/o | parathyroid gland |
| pariet/o | parietal bone, wall, partition |
| patell/o, patell/a | patella, kneecap |
| path/o | disease |
| pector/o | pectoral muscles, chest |
| ped/o | child |
| pelv/i | pelvis, hip |
| pericardi/o | pericardium |
| perine/o | perineum |
| peritone/o | peritoneum |
| petr/o | stone |
| phac/o, phak/o | lens of the eye |
| phag/o | eat, swallow |
| phalang/o | phalanx, phalanges, finger or toe |
| phall/o | penis |
| pharyng/o | pharynx, throat |
| phas/o | speech |
| phil/o | attraction |
| phleb/o | vein |
| phon/o | sound, voice |
| phor/o | to bear, to carry |
| phosphat/o, phosph/o | phosphorus |
| phot/o | light |
| phren/o | diaphragm, mind |
| phys/o | growing |
| pil/o | hair |
| pituitar/o | pituitary gland |
| plas/o | formation |
| plast/o | formation |
| pleur/o | pleura |
| plic/o | fold |
| pneum/o, pneumat/o | lung, air |
| pneumon/o | lung |
| pol/o | pole |
| poli/o | gray matter |
| polyp/o | polyp |
| pont/o | pons |
| por/o | passage |
| poster/o | back |
| prax/o | purposeful movement |
| preputi/o | prepuce |
| presby/o | old age |
| proct/o | rectum and anus |
| prostat/o | prostate gland |
| prosthes/o, prosthet/o | addition |
| proxim/o | near |
| psych/o | mind |
| pub/o | pubis |
| pulmon/o | lung |
| pupill/o | pupil |
| purpur/o | purpura (literally "purple") |
| pustul/o | pustule, pimple |
| py/o | pus |
| pyel/o | renal pelvis |
| pylor/o | pylorus |
| pyr/o | fire, fever |
| pyrex/o | fever |
| quadr/i | four |
| rachi/o | spine, spinal column, backbone |
| radi/o | radius (lower arm), x-rays |
| radic/o, radicul/o | nerve root |
| rect/o | rectum, straight |
| ren/o | kidney |
| retin/o | retina |
| rheumat/o | watery flow |
| rhin/o | nose |
| rhiz/o | spinal nerve root |
| rhythm/o, rrhythm/o | rhythm |
| rhytid/o | wrinkle |
| rube/o | red |
| sacr/o | sacrum |
| sagitt/o | arrow, separating the sides |
| salping/o | fallopian tube, uterine tube, eustachian tube |
| sarc/o | flesh |
| scapul/o | scapula, shoulder blade |
| scler/o | sclera, hard |
| scoli/o | bent, curvature |
| scot/o | darkness |
| scrot/o | scrotum |
| seb/o | sebum, oil |
| semin/i | semen |
| sept/o | septum |
| ser/o | blood serum |
| sial | saliva |
| sialaden/o | saliva gland |
| sider/o | iron |
| sigmoid/o | sigmoid colon |
| sinistr/o | left, left-sided |
| sinus/o, sin/o | sinus |
| som/o, somat/o | body |
| somn/o | sleep |
| son/o | sound |
| sperm/o, spermat/o | sperm, spermatozoon |
| sphenoid/o | sphenoid |
| sphygm/o | pulse |
| spin/o | spine, spinal column |
| spir/o | breath, breathing |
| splen/o | spleen |
| spondyl/o | vertebra, backbone, spine |
| squam/o | scaly, dry |
| staped/o | stapes, middle ear |
| staphyl/o | clusters |
| steat/o | fat |
| ster/o, stere/o | solid, having three dimensions, three dimensional |
| stern/o | sternum, breast bone |
| steth/o | chest |
| sthen/o | strength |
| strept/o | twisted chain |
| stom/o, stomat/o | mouth |
| syndesm/o | ligament |
| synovi/o | synovial joint membrane |
| system/o | system |
| tars/o | tarsal, ankle bone |
| tax/o | order, arrangement |
| tel/o, tel/e | end, complete, far |
| tempor/o | temporal bone |
| ten/o, tendin/o | tendon, connective tissue |
| test/o, testicul/o | testicle |
| thalam/o | thalamus |
| thel/e | nipple |
| therm/o | heat, temperature |
| thorac/o | thorax, chest |
| thromb/o | clot |
| thrombocyte | blood clot, platelet |
| thym/o | thymus gland |
| thyr/o, thyroid/o | thyroid gland |
| tibi/o | tibia, shin bone |
| toc/o | labor, delivery |
| tom/o | cutting, slice, section |
| ton/o | tension |
| tonsill/o | tonsil |
| top/o | place |
| tox/o, toxic/o | poison |
| trache/o | trachea, windpipe |
| trich/o | hair |
| trigon/o | trigone |
| trop/o | to turn, turning |
| troph/o | development, nourishment |
| tympan/o | eardrum, drum |
| uln/o | ulna, lower medial armbone |
| umbilic/o | umbilicus, naval |
| ungu/o | nail |
| ur/o, urin/o | urine, urinary system |
| ureter/o | ureter |
| urethr/o | urethra |
| uter/o | uterus |
| uve/o | uvea |
| uvul/o | uvula |
| vag/o | vagus nerve |
| vagin/o | vagina |
| valv/o, valvul/o | valve |
| varic/o | varices, swollen twisted vessels |
| vas/o, vascul/o | vessel, vas deferens |
| ven/o, ven/i | vein |
| ventr/o | bellyside |
| ventricul/o | ventricle |
| vesic/o | bladder |
| venul/o | venule |
| vertebr/o | vertebra, backbone |
| vesic/o | urinary bladder |
| vesicul/o | seminal vesicles |
| vestibul/o | vestibule |
| vir/o | virus |
| viscer/o | viscera, organ |
| vitre/o | vitreous body, glass, glassy |
| vomer/o | vomer |
| vulv/o | vulva |
| xanth/o | yellow |
| xen/o | foreign |
| xer/o | dry |
| zo/o | life (animal) |
| zygomat/o | zygoma, cheekbone |