| Term | Definition |
| Acrodermatitis | Inflammation of the skin extremities |
| Acromegaly | enlarged extremeties |
| Acroparalysis | paralysis of the extremeties |
| Adjective | descriptor, modifies nouns |
| Anemia/Anemic | lack blood; noun/adjective |
| Vertebra/Vertebrae | spinal bones; singular/plural |
| Appendix/Appendices | glandular tissue below the cecum; singular/plural |
| Bacillus/Bacilli | rod-shaped bacteria; singular/plural |
| Bacterium/Bacteria | microorganism group; singular/plural |
| Brainstem | midbrain, pons, medulla oblongata |
| Carcinoma/Carcinomata | cancer (epithelial origin); singular/plural |
| Carpus/Carpal | wrist bone; noun/adjective |
| Chickenpox | viral infection with Varicella zoster |
| Combining Form | word root plus a vowel |
| Compound Word | word made of two or more word roots |
| Condyle/Condylar | rounded bony process; noun/adjective |
| Contraction | condition of shortening a body part (tensing) |
| Crisis/Crises | acute (severe) situation; singular/plural |
| Cyanosis/Cyanotic | condition of blueness; noun/adjective |
| Cytometer | instrument that measures (counts) cells |
| Dermatitis | inflammation of the skin |
| Dermatology | the study of the skin, medical specialty |
| Disease | abnormal function or condition |
| Extension | stretching or elongation |
| Gastrectomy | excision of the stomach |
| Gastric | stomach (adjectival form) |
| Gastritis | inflammation of the stomach |
| Gastroduodenostomy | make a surgical opening between the stomach and duodendum |
| Hydrocele | an accumulation of fluid in a sac-like cavity |
| Hydrophobia | abnormal fear of water |
| Hydrotherapy | therapy using water |
| Hyperthyroidism | overactive thyroid condition |
| Ilium/Iliac | upper pelvic bone; noun/adjective |
| Inflammation | condition defined by redness, swelling, pain, and warmth |
| Inject, injected, injecting | put in using a needle, verbs |
| Injectable | able to be injected |
| Larynx/Larynges | voice box; singular/plural |
| Lymphadenopathy | disease of a lymph gland |
| Microbe | very small organism |
| Microfilm | image reduced to small size on film |
| Micrometer | one millionth of a meter |
| Microscope | instrument used to look at small structures |
| Microsurgery | surgery using a microscope |
| Mucus/Mucous | watery substance produced by a membrane; noun/adjective |
| Neurospasm | nerve spasm (twitching) |
| Noun | name of a person, place, or thing |
| Practitioner | one who practices |
| Prefix | placed before a word root to change its meaning |
| Psychiatrist | specialist in treating mental disorders |
| Radiographer | one who makes x-ray images |
| Sensitivity | quality of being sensitive |
| Spermatozoon/Spermatozoa | sperm; singular/plural |
| Suffix | follows a word root to change its meaning or part of speech |
| Thermometer | instrument that measures temperature |
| Transport | carry across |
| Verb | action or "state of being" word |
| Vomit, vomited, vomiting | evacuate stomach contents; verbs |
| Word Root | base of a word |
| Gastroduodenoscopy | examination by looking into the stomach and the duodenum with a scope |