| ergocalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, cholecalciferol, D, viosterol, vitamin D |
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| ergodicity | (noun) an attribute of stochastic systems; generally, a system that tends in probability to a limiting form that is independent of the initial conditions | - |
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| ergometer | (noun) measuring instrument designed to measure power | Synonyms: dynamometer |
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| ergonomics | (noun) the branch of engineering science in which biological science is used to study the relation between workers and their environments | Synonyms: bioengineering, biotechnology |
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| ergonovine | (noun) an alkaloid derived from ergot (trade name Ergotrate Maleate) that is less toxic than ergot; induces muscular contraction of the uterus and is administered after childbirth or abortion | Synonyms: Ergotrate Maleate |
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| ergosterol | (noun) a plant sterol that is converted into vitamin D by ultraviolet radiation | - |
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| ergot | (noun) a fungus that infects various cereal plants forming compact black masses of branching filaments that replace many grains of the plant; source of medicinally important alkaloids and of lysergic acid | Synonyms: Claviceps purpurea |
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| (noun) a plant disease caused by the ergot fungus | - |
| ergotamine | (noun) an alkaloid derived from ergot that is less toxic than ergot; causes constriction of blood vessels and is used to treat migraine | - |
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| ergotine | (noun) a powerful astringent alkaloid extracted from ergot as a brown, amorphous, bitter substance, used to produce contraction of the uterus. | - |
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| ergotism | (noun) poisoning by ingestion of ergot-infected grain products; characterized by thirst and diarrhea and nausea and cramping and vomiting and abnormal cardiac rhythms; in severe cases it can cause seizures and gangrene of the limbs | - |
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| ergotropism | (noun) an affinity for work | - |
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