| enediol | <chemistry> The atomic arrangement -C(OH)==C(OH)-produced by proton migration from the CH of a -CHOH group that is attached to a -CO-group to the oxygen of the -CO-group (usually induced by alkali), giving rise to doubly bonded carbon atoms (the -ene group), each bearing a -CHOH group (a diol); a special case of enolization. (05 Mar 2000) |
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| enema | <procedure> A clyster or injection, a liquid injected or to be injected into the rectum. (18 Nov 1997) |
| enemator | An appliance used to give an enema. (05 Mar 2000) |
| enemy | One hostile to another; one who hates, and desires or attempts the injury of, another; a foe; an adversary; as, an enemy of or to a person; an enemy to truth, or to falsehood. The enemy, the hostile force. In this sense it is construed with the verb and pronoun either in the singular or the plural, but more commonly in the singular; as, we have met the enemy and he is ours or they are ours. Synonym: Foe, antagonist, opponent. See Adversary. Origin: OF. Enemi, F. Ennemi, from L. Inimicus; in- (negative) + amicus friend. See Amicable. Source: Websters Dictionary (01 Mar 1998) |
| enepidermic | <medicine> Applied to the skin without friction; said of medicines. Origin: Pref. En- (Gr) + epidermic. Source: Websters Dictionary (01 Mar 1998) |
| energetic | <chemistry, physiology> Exhibiting energy: strenuous, operating with force, vigour or effect. (18 Nov 1997) |
| energetics | <study> That branch of science which treats of the laws governing the physical or mechanical, in distinction from the vital, forces, and which comprehends the consideration and general investigation of the whole range of the forces concerned in physical phenomena. (03 Mar 1998) |
| energometer | An apparatus for measuring blood pressure. Origin: G. Energeia, energy, + metron, measure (05 Mar 2000) |
| energumen | One possessed by an evil spirit; a demoniac. Origin: L. Energumenos, fr. Gr. Possessed by an evil spirit, from: cf. F. Energumene. See Energetic. Source: Websters Dictionary (01 Mar 1998) |
| energy | <radiobiology> Typically defined as the ability to do work. Power is the rate at which work is done, or the rate at which energy is changed. Work characterises the degree to which the properties of a substance are transformed. Energy exists in many forms, which can be converted from one to another in various ways. Examples include: gravitational energy, electrical energy, magnetic and electric field energy, atomic binding energy (a form of electrical energy really), nuclear binding energy, chemical energy (another form of electrical energy), in addition to these forms of potential energy there are also kinetic energy (energy due to motion), and thermal energy (heat, a form of kinetic energy where the motion is due to thermal vibrations/motions), and so on. (09 Oct 1997) |
| energy balance | <radiobiology> Comparison of energy put into a plasma with the energy dissipated by the system, related to energy confinement. (09 Oct 1997) |
| energy confinement time | <radiobiology> Characteristic time in which 1/e (or sometimes 1/2) of a system's energy is lost to its surroundings. In a plasma device, the energy loss time (or the energy confinement time) is one of three critical parameters determining whether enough fusion will occur to sustain a reaction. See: Lawson criterion. (09 Oct 1997) |
| energy coupling | <chemistry> The tranfer of energy produced in one reaction to another. (09 Oct 1997) |
| energy crop | Crops grown specifically for their fuel value. These include food crops such as corn and sugarcane, and nonfood crops such as poplar trees and switchgrass. Currently, two energy crops are under development: short-rotation woody crops, which are fast-growing hardwood trees harvested in 5 to 8 years, and herbaceous energy crops, such as perennial grasses, which are harvested annually after taking 2 to 3 years to reach full productivity. (05 Dec 1998) |
| Energy Dispersive Spectroscopy | <technique> A microanalytical technique that is based on the characteristic X-ray peaks that are generated when the high energy beam of the electron microscope interacts with the specimen. Each element yields a characteristic spectral fingerprint that may be used to identify the presence of that element within the sample. The relative intensities of the spectral peaks may be used to determine the relative concentrations of each element in the specimen. The X-ray signal is detected by a solid-state silicon-lithium detector and the construction and efficiency of this detector sets a lower limit on the atomic number that may be detected. Generally elements heavier than carbon (Z=5) are detectable. Acronym: EDS (05 Aug 1998) |
| androst-5-ene-3 beta,17 beta-diol | <chemical> An adrenal-derived oestrogenic metabolite of dhea. Evidence exist for its use as an endocrine regulator of immune response. Pharmacological action: anabolic steroids. Chemical name: Androst-5-ene-3,17-diol, (3beta,17beta)- (12 Dec 1998) |
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| 1-ene-dehydrogenase | <enzyme> Converts testosterone to 1-dehydrotestosterone in the absence of nad Registry number: EC 1.3.- Synonym: monocresyl diphenyl phosphate (26 Jun 1999) |
| 2,4-dihydroxyhept-2-ene-1,7-dioic acid aldolase | <enzyme> Plays a role in the e. Coli homoprotocatechuic acid (hpc) pathway; genbank z47799 Registry number: EC 4.1.2.- Synonym: hpch protein, hpch gene product, hhed aldolase (26 Jun 1999) |
| 2-oxohept-3-ene-1,7-dioic acid hydratase | <enzyme> Involved in the meta-fission homoprotocatechuic acid pathway of escherichia coli; showed 36% amino acid sequence identity with the catechol pathway hydratase; genbank x81446 Registry number: EC 4.2.1.- Synonym: ohed hydratase, hpcg gene product (26 Jun 1999) |
| 4-carboxymethyl-methylbut-2-ene-1,4-olide isomerase | <enzyme> From alcaligenes eutrophus; catalyses the formation of 3-methyl-2-ene-lactone from 4-methyl-2-ene-lactone Registry number: EC 5.4.99.- Synonym: 4-methyl-2-enelactone isomerase (26 Jun 1999) |
| 5-oxopent-3-ene-1,2,5-tricarboxylate decarboxylase | <enzyme> Yields 2-hydroxyhepta-2,4-diene-1,7-dioate; exists as a bifunctional enzyme with 2-hydroxyhepta-2,4-diene-1,7-dioate isomerase in the homoprotocatechuate degradative pathway of E coli Registry number: EC 4.1.1.68 Synonym: 5-cohed decarboxylase, 5-carboxymethyl-2-oxo-hex-3-ene-1,6-dioate decarboxylase, opet decarboxylase (26 Jun 1999) |
| -ene | <suffix> Suffix applied to a chemical name indicating the presence of a carbon-carbon double bond; e.g., propene (unsaturated propane, CH3-CH==CH2). Origin: G. Enos, origin (05 Mar 2000) |