| EBV | See Epstein Barr Virus. |
| Ecchymosis | Small, flat hemorrhagic spots on the skin or mucous membranes. |
| ECG | See Electrocardiogram. |
| Eclampsia | |
| Ectopic | |
| Ectopic Pregnancies | See Ectopic Pregnancy. |
| Ectopic Pregnancy | |
| Eczema | |
| Edema | |
| Edematous Dermatitis | Skin irritation marked by an accumulation of watery fluid. |
| EDTA | |
| EFA | See Essential Fatty Acid. |
| EFAs | See Essential Fatty Acid. |
| EKG | See Electrocardiogram. |
| Elastin | |
| Elastofibroma | See Fibromas. |
| Elastofibromas | See Fibromas. |
| Electrocardiogram | |
| Electrolyte | |
| Electrolytes | See Electrolyte. |
| ELISA | |
| Embolism | |
| Embrocation | Liniment; external application of a liniment. |
| Embryotoxic | Poisonous to the developing embryo. |
| Emetic | |
| Empyema | |
| Emulsion | |
| Endangiitis Obliterans | Inflammation of the inner blood vessel membrane leading to vessel occlusion. |
| Endemic | |
| Endocrine Glands | A set of glands including the pituitary, hypothalamus, pineal, thyroid, parathyroid, thymus and adrenal glands, as well as the pancreas, ovaries and testes. |
| Endogenous | From within the body, either a native function or the product of the extended colony. Normal flora in the colon are considered endogenous. |
| Endometriosis | |
| Endorphin | See Endorphins. |
| Endorphins | |
| Endoscope | |
| Endoscopy | |
| Endothelia | See Endothelium. |
| Endothelial | See Endothelium. |
| Endothelioid | See Endothelium. |
| Endothelium | A thin layer of flat epithelial cells that lines serous cavities, lymph vessels, and blood vessels. |
| Enteral | |
| Enteric | |
| Enteric-coated | See Enteric. |
| Enteritis | |
| Enterobiasis | See Pinworms. |
| Enterobious vermicularis | See Pinworms. |
| Environmental Illness | See Multiple Chemical Sensitivity. |
| Enzyme | See Enzymes. |
| Enzymes | Specific protein catalysts produced by the cells that are crucial in chemical reactions and in building up or synthesizing most compounds in the body. Each enzyme performs a specific function without itself being consumed. For example, the digestive enzyme amylase acts on carbohydrates in foods to break them down. |
| Eosinophil | |
| Eosinophilia | See Eosinophil. |
| Eosinophils | See Eosinophil. |
| EPA | Environmental Protection Agency. Also: Eicosapentanoic Acid. A metabolite of the omega-3 fatty acid alpha-linolenic acid. |
| Epicondylitis | Infection or inflammation of a projection from a long bone near the extremity. |
| Epidemic | Describes a disease occurring in extensive outbreaks, or with an unusually high incidence at certain times and places. |
| Epidemiology | The study of the causes and distribution of disease in human populations. |
| Epidermis | |
| Epigastric | |
| Epiglottitis | |
| Epilemma | Interstitial sheath-like connective tissue in a peripheral nerve that separates the individual nerve fibers. |
| Epilepsy | |
| Epinephrin | See Adrenaline. |
| Epinephrine | See Adrenaline. |
| Epithelial | Referring to the cells that line and protect the external and internal surfaces of the body. Epithelial cells form epithelial tissues such as skin and mucous membranes. |
| Epithelioid Sarcoma | |
| Epstein Barr Virus | |
| Epstein-Barr Virus | See Epstein Barr Virus. |
| Ergogenic | |
| Erythema Nodosum | |
| Erythrocyte | See Red Blood Cell. |
| Erythrocytes | See Red Blood Cell. |
| Erythropoietic Protoporphyria | See Protoporphyria. |
| Esophageal | See Esophagus. |
| Esophagus | |
| Essential Fatty Acid | |
| Essential Fatty Acids | See Essential Fatty Acid. |
| Essential Oil | |
| Essential Oils | See Essential Oil. |
| Estrogen | |
| Exanthem | Rash, symptomatic of viral or bacterial diseases. |
| Excision | Surgical cutting away and/or taking out. |
| Exogenous | Arising from the outside; the opposite of endogenous. |
| Exophthalmos | |
| Expectorant | |
| Expectorants | See Expectorant. |
| Extensor | |
| Extensors | See Extensor. |
| Extrapyramidal | |
| Extrasystole | An ectopic or asynchronous beat from any source in the heart. |
| Exudates | The feral and congested fluids built up in a bruise or infection. Unlike a transudate, which is merely edema from lymphatic congestion, exudates contain dead cells, erythrocytes, white blood cells and often pus. |
