| Word Part |
Meaning |
| a-, an- | no, not |
| ab- | away from |
| abdomin/o | abdomen |
| -ac | pertaining to |
| ad- | toward |
| aden/o | gland |
| adenoid | adenoids |
| adren/o | adrenal glands |
| -algia | pain |
| alveol/o | alveolus (air sac with lungs) |
| amni/o | amnion (sac surrounding embryo) |
| ana- | up, apart |
| an/o | anus |
| angi/o | vessel |
| ante- | before, forward |
| anter/o | front |
| anti- | against |
| aort/o | aorta |
| append/o | appendix |
| -ar | pertaining to |
| arteri/o | artery |
| arterio/o | small artery |
| arthr/o | joint |
| -ary | pertaining to |
| ather/o | fatty plaque |
| -ation | process, condition |
| aur/o | ear |
| aut- | self |
| axill/o | armpit |
| balan/o | penis |
| bi- | two |
| bi/o | life |
| blephar/o | eyelid |
| brady- | slow |
| bronch/o | bronchial tube |
| bronchiol/o | small bronchial tube |
| calcane/o | calcaneus |
| capillar/o | capillary |
| carcin/o | cancer, cancerous |
| cardi/l | heart |
| carp/o | wrist |
| -cele | hernia |
| -centesis | sugical puncture to remove fluid |
| cephal/o | head |
| cerebell/o | cerebellum (posterior part of the brain) |
| cerebr/o | cerebrum (largest part of brain) |
| cervic/o | neck |
| chem/o | drug, chemical |
| cholecyst/o | gallbladder |
| choledoch/l | common bile duct |
| chondr/o | cartilage |
| chron/o | time |
| -cision | process of cutting |
| cis/o | to cut |
| clavicul/o | clavicle (collar bone) |
| -coccus | bacterium |
| coccyg/o | tailbone |
| col/o | colon (large intestine) |
| colon/o | colon |
| colp/o | vagina |
| comi/o | to care for |
| con- | with, together |
| coron/o | heart |
| cost/o | rib |
| crani/o | skull |
| crin/o | secrete |
| -crine | secretion |
| -crit | separation |
| cry/o | cold |
| cutane/o | skin |
| cyan/o | blue |
| cyst/o | urinary bladder |
| cyt/o | cell |
| -cyte | cell |
| dermat/o, derm/o | skin |
| dia- | thorough, complete |
| -dipsia | thirst |
| dur/o | dura mater (outermost meningeal layer) |
| -dynia | pain |
| dys- | abnormal, bad, difficult, painful |
| -eal | pertaining to |
| ec- | out, outside |
| ecto- | outside |
| -ectomy | excision, removal |
| electr/o | electricity |
| -emia | blood condition |
| en- | within |
| encephal/o | brain |
| endo- | within, inner |
| endocrin/o | endocrine glands |
| endometr/o | endometrium (inner lining of uterus) |
| enter/o | intestines |
| epi- | above, upon |
| epiglott/o | epiglottis |
| epitheli/o | skin (surface tissue) |
| erythr/o | red |
| esthesi/o | sensation |
| ex-, exo-, extra- | out, outside |
| femor/o | femur |
| fibr/o | fibrous tissue |
| fibul/o | fibula |
| gastr/o | stomach |
| gen/o | to produce |
| -gen | to produce |
| -genesis | producing, forming |
| -genic | pertaining to producing |
| ger/o | old age |
| glyc/o | sugar |
| gnos/o | knowledge |
| -gram | record |
| -graphy | process of recording, to record |
| gynec/o | woman, female |
| hemat/o | blood |
| humer/o | humerus |
| hydr/o | water |
| hyper- | above, excessive, more than normal |
| hypo- | below, deficient, less than normal |
| hypophys/o | pituitary gland |
| hyster/o | uterus |
| -ia | condition |
| -ian | practitioner |
| iatr/o | treatment |
| -ic | pertaining to |
| in- | in, into |
| -ine | pertaining to |
| infra- | below |
| inguin/o | groin |
| inter- | between |
| intra- | within |
| isch/o | to hold back |
| -ism | condition, process |
| -ist | specialist |
| -itis | inflammation |
| lapar/o | abdomen |
| -lapse | slide |
| laryng/o | larynx (voice box) |
| later/o | side |
| leuk/o | white |
| lip/o | fat |
| -logy | study of, process of study |
| lumb/o | loin, waist region |
| lymph/o | lymph |
| lys/o | separation, breakdown, destruction |
| -lysis | separation, breakdown, destruction |
| mal- | bad |
| mamm/o | breast |
| mast/o | breast |
| mediastin/o | mediastinum |
| medull/o | medulla oblongata (largest part of the brain) |
| -megaly | enlargement |
| men/o | menstruation |
| mening/o | meninges (membranes surrounding the brain and spinal cord) |
| meta- | beyond, change |
| metacarp/o | mertacarpals (hand bones) |
| metatars/o | metatarsals (foot bones) |
| -meter | to measure |
| -mortem | death |
| -motor | movement |
| muscul/o | muscle |
| my/o | muscle |
| myel/o | muscle |
| myel/o | bone marrow |
| myring/o | eardrum |
| nas/o | nose |
| nat/o | birth |
| necr/o | death |
| neo- | new |
| nephr/o | kidney |
| neur/o | nerve |
| norm/o | rule, order |
| nos/o | disease |
| obstetr/o | midwife |
| ocul/o | eye |
| -oma | tumor, mass, swelling |
| onc/o | tumor |
| oophor/o | ovary |
| ophthalm/o | eye |
| -opsy | process of viewing |
| opt/o, optic/o | eye |
| or/o | mouth |
| orch/o | testicle, testis |
| orth/o | straight |
| -osis | abnormal condition |
| osm/o | smell |
| oste/o | bone |
| ot/o | ear |
| -ous | pertaining to |
| ovari/o | ovary |
| para- | beside, near, along the side of |
| parathyroid/o | parathyroid gland |
| -partum | birth |
| path/o | disease |
| -pathy | disease condition |
| ped/o | child |
| pelv/o | hip bone |
| -penia | deficiency |
| per- | through |
| peri- | surrounding |
| peritone/o | peritoneum (membrane around abdominal organs) |
| perone/o | fibula |
| phak/o | lens of the eye |
| pharyng/o | pharynx, throat |
| -phasia | speech |
| phleb/o | vein |
| phren/o | diaphragm |
| phren/o | mind |
| plas/o | formation, growth |
| -plasm | formation, growth |
| -plasia | formation, growth |
| -plasty | surgical repair |
| -plegia | paralysis |
| pleur/o | pleura membrane (membran surrounding lungs) |
| -pnea | breathing |
| pneum/o | air, lung |
| pneumon/o | lung |
| poly- | many, much |
| post- | after, behind |
| poster/o | back, behind |
| pre- | before |
| pro-, pros- | before, forward |
| proct/o | anus and rectum |
| pulmon/o | lung |
| radi/o | x-ray; radius |
| re-, retro- | behind, back |
| rect/o | rectum |
| ren/o | kidney |
| retin/o | retina of the eye |
| rheumato/o | flow, fluid |
| rhin/o | nose |
| -rrhage | bursting forth of blood |
| -rrhagia | bursting forth of blood |
| -rrhea | flow, discharge |
| sacr/o | sacrum |
| salping/o | fallopian |
| sarc/o | flesh |
| scapul/o | shoulder blade |
| -sclerosis | hardening |
| -scope | instrument to view |
| -scopy | process of viewing |
| scrot/o | scrotal sac, scrotum |
| -section | to cut |
| sept/o | infection |
| septic/o | infection |
| -sis | condition |
| -spasm | constriction |
| spin/o | backbone, spine |
| splen/o | spleen |
| -stenosis | narrowing |
| stern/o | sternum (breast bone) |
| stomat/o | mouth |
| -stomy | opening |
| sub- | under, below |
| sym- | with, together |
| syn- | with, together |
| tachy- | fast |
| -tension | pressure |
| theli/o, thel/o | nipple |
| -therapy | treatment |
| -thesis | to put, to place |
| thorac/o | chest |
| thromb/o | clot |
| thym/o | thymus gland |
| thyr/o, thyroid/o | thyroid gland |
| tibi/o | tibia or shin bone |
| -tic | pertaining to |
| -tomy | incision, cutting into |
| tonsill/o | tonsils |
| trache/o | trachea, windpipe |
| trans- | across, through |
| troph/o | development, nourishment |
| tympan/o | eardrum |
| uln/o | ulna (medial lower arm bone) |
| ultra- | beyond |
| -um | structure |
| ureter/o | ureter |
| urethr/o | urethra |
| ur/o | urine, urinary tract |
| -uria | urine condition |
| uter/o | uterus |
| vagin/o | vagina |
| vas/o | vessel, vas deferens |
| vascul/o | blood vessel |
| ven/o | vein |
| vertebr/o | vertebra, backbone |
| vesic/o | urinary bladder |
| -y | condition, process |
