-ac, -al, -ic, -ical, pertaining to [cardiac, neural, gastric, neurological] -algia pain [arthralgia] -cyte cell [leukocyte, erythrocyte, thrombocyte] -ectomy excision, removal [nephrectomy, splenectomy] -emia blood condition [leukemia, anemia] -genic pertaining to, producing or produced by [carcinogenic, iatrogenic, pathogenic] -gram record [electroencephalogram] -ion process [excision] -ist specialist [gynecologist] -itis inflammation [cystitis, appendicitis, laryngitis} -logy study of [endocrinology] -oma tumor, mass, swelling [hepatoma, teratoma, carcinoma] -opsy process of viewing [biopsy] -osis condition, usually abnormal [nephrosis, leukocytosis] -pathy disease condition [adenopathy, neuropathy] -scope instrument to visually examine [ophthalmoscope] -scopy process of visually examining [sigmoidoscopy] -sis state of [prognosis] -tomy process of cutting, incision [lobotomy] -y process, condition [gastroenterology] a-, an- no, not, without [anemia, aseptic] auto- self [autosplenectomy] dia- through, complete [diagnosis] endo- within [endoscope] epi- above, upon [epigastric, epidermis] ex-, exo- out[excision, exophthalmos] hyper- excessive, above, more than normal [hyperglycemia] hypo- deficient, below, less than normal [hypothyroid] in- into, in [incision] peri- surrounding [pericardium, perimenopause] pro- before [prognosis] re- back [resection] retro- behind [retrogastric] sub- below, under [subhepatic] trans- across, through [transaortic]