| ET | educational therapy; effective temperature; ejection time; embryo transfer; endothelin; endotoxin; e... |
|---|---|
| ET | 1) Essential Thrombocytosis 2) Embryo Transfer |
| EAA | electroacupuncture analgesia; Epilepsy Association of America; essential amino acid; excitatory amin... |
| EACH | essential access community hospital |
| EFA | Epilepsy Foundation of America; essential fatty acid; extrafamily adoptee |
| EMEM | Eagle's Minimal Essential Medium |
|---|---|
| EFA | Essential Fatty Acid |
| EFAD | Essential Fatty Acid Deficient |
| EH | Essential Hypertension |
| EMC | Essential Mixed Cryoglobulinemia |
| essential | 1. Belonging to the essence, or that which makes an object, or class of objects, what it is. "Majestic as the voice sometimes became, there was forever in it an essential character of plaintiveness." (Hawthorne) 2. Hence, really existing; existent. "Is it true, that thou art but a a name, And no essential thing?" (Webster (1623)) 3. Important in the highest degree; indispensable to the attainment of an object; indispensably necessary. "Judgment's more essential to a general Than courage." (Denham) "How to live? that is the essential question for us." (H. Spencer) 4. Containing the essence or characteristic portion of a substance, as of a plant; highly rectified; pure; hence, unmixed; as, an essential oil. "Mine own essential horror." 5. Necessary; indispensable; said of those tones which constitute a chord, in distinction from ornamental or passing tones. 6. <medicine> Idiopathic; independent of other diseases. <biology> Essential character, a class of volatile oils, extracted from plants, fruits, or flowers, having each its characteristic odour, and hot burning taste. They are used in essences, perfumery, etc, and include many varieties of compounds; as lemon oil is a terpene, oil of bitter almonds an aldehyde, oil of wintergreen an ethereal salt, etc.; called also volatile oils in distinction from the fixed or nonvolatile. Origin: Cf. F. Essentiel. See Essence. Source: Websters Dictionary (01 Mar 1998) |
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| essential albuminuria | A collective term for types that are not the result of pathologic changes in the kidneys. Synonym: essential albuminuria. (05 Mar 2000) |
| essential amino acid | <biochemistry> Those amino acids that cannot be synthesised by an organism and must therefore be present in the diet. The term is often applied anthropocentrically to those amino acids required by humans (Ileu, Leu, Lys, Met, Phe, Thr, Try, & Val), though rats need two more (Arg & His). (18 Nov 1997) |
| essential amino acids | Alpha-amino acids nutritionally required by an organism and which must be supplied in its diet (i.e., cannot be synthesised by the organism) either as free amino acid or in proteins. (05 Mar 2000) |
| essential anaemia | An obsolete term for pernicious anaemia; also used formerly for any type of anaemia of unknown mechanism. (05 Mar 2000) |
| essential anisocoria | A common (20% of normals) benign inequality of the pupils that may change from one hour to the next. Synonym: essential anisocoria, physiologic anisocoria, simple-central anisocoria. (05 Mar 2000) |
| essential bradycardia | A slow pulse for which no cause can be discovered. Synonym: idiopathic bradycardia. (05 Mar 2000) |
| essential dysmenorrhoea | <gynaecology> Painful menses due to a functional disturbance and not due to organic factors such as growths, inflammation or anatomy. (27 Sep 1997) |
| essential fatty acid | <biochemistry> The three fatty acids required for growth in mammals, arachidonic, linolenic and linoleic acids. Only linoleic acid needs to be supplied in the diet, the other two can be made from it. (18 Nov 1997) |
| essential fever | Fever without known infectious disease. (05 Mar 2000) |
| essential food factors | Those substances required in the diet: certain amino acids and unsaturated fatty acids, vitamins, essential minerals, etc. (05 Mar 2000) |
| essential gene | <genetics> Any gene that, if it does not workcorrectly, kills the organism. (09 Oct 1997) |
| essential hypertension | Hypertension without known cause. Synonym: idiopathic hypertension, primary hypertension. (05 Mar 2000) |
| essential oils | Plant products, usually somewhat volatile, giving the odours and tastes characteristic of the particular plant, thus possessing the essence, e.g., citral, pinene, camphor, menthane, terpenes; usually, the steam distillates of plants or oils of plants obtained by pressing out the rinds of a particular plant. See: volatile oil. (05 Mar 2000) |
| essential phthisis bulbi | A softening of the eyeball (ophthalmomalacia) and reduction in size, not due to inflammation. (05 Mar 2000) |
| benign essential tremor | A benign tremor inherited as a dominant character; it may be a rapid oscillation resembling that seen in thyrotoxicosis, a coarse tremor during rest and inhibited by a voluntary effort, or one which appears only upon movement. Synonym: benign essential tremor, familial tremor. (05 Mar 2000) |
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| drugs, essential | Drugs considered essential to meet the health needs of a population as well as to control drug costs. (world health organization action programme on essential drugs, 1994, p3) (12 Dec 1998) |
| osteolysis, essential | Syndromes of bone destruction where the cause is not obvious such as neoplasia, infection, or trauma. The destruction follows various patterns: massive (gorham disease), multicentric (hajdu-cheney syndrome, winchester syndrome), or carpal/tarsal. (12 Dec 1998) |
| Eagle's minimum essential medium | A tissue culture medium similar to Eagle's basal medium but with different amounts and a few exclusions (e.g., antibiotics and phenol red). (05 Mar 2000) |
| fatty acids, essential | Fatty acids that cannot be synthesised by the human body and must be obtained from dietary sources, e.g., linoleic acids and linolenic acids. (12 Dec 1998) |
Synonyms : Benign Essential Tremors, Essential Tremor, Benign, Essential Tremors, Essential Tremors, Benign, Familial Tremors, Tremor, Benign Essential, Tremor, Essential, Tremor, Familial, Tremors, Benign Essential, Tremors, Essential, Tremors, Familial
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| essential |
absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker" basic and fundamental; "the essential feature" all-important(a): of the greatest importance; "the all-important subject of disarmament"; "crucial information"; "in chess cool nerves are of the essence" being or relating to or containing the essence of a plant etc; "essential oil" substantive: defining rights and duties as opposed to giving the rules by which rights and duties are established; "substantive law" necessity: anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained" absolutely required and not to be used up or sacrificed
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| essential amino acid |
an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet
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| essential hypertension |
persistent and pathological high blood pressure for which no specific cause can be found
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| essential oil |
an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings
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| essential tremor |
tremor of unknown cause (usually of the hands and head) that develops in older people; often mistaken for Parkinsonism but is not life-threatening and can usually be kept under control
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| essential | anything indispensable |
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| essential | (law) applying to essential legal principles and rules of right |
| essential | basic and fundamental |
| essential | absolutely required and not to be used up or sacrificed |
| essential | of the greatest importance |
| essential | absolutely necessary |
| essential | being or relating to or containing the essence of a plant etc |
| essential | an amino acid that is required by animals but that they cannot synthesize |
| essential | a prerequisite |
| essential | persistent and pathological high blood pressure for which no specific cause can be found |
| essential | a volatile oil having the odor or flavor of the plant from which it comes |
| essential | the primary form of thrombocytopenia (rather than a shortage of platelets caused by with other conditions such as tuberculosis or chemical suppression of bone marrow etc.) |
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