| excipient | <chemistry, pharmacology> Any more or less inert substance added to a prescription in order to confer a suitable consistency or form to the drug, a vehicle. Origin: L. Excipiens, capere = to take (18 Nov 1997) |
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| excipulum | <botany> The outer part of the fructification of most lichens. Origin: NL. Excipulum, fr. L. Excipere. See Except. Source: Websters Dictionary (01 Mar 1998) |
| excise | To cut out. See: resect. (05 Mar 2000) |
| excision | <surgery> To surgically remove. To excise tissue. (27 Sep 1997) |
| excision biopsy | Excision of tissue for gross and microscopic examination in such a manner that the entire lesion is removed. (05 Mar 2000) |
| excision repair | <molecular biology> Mechanism for the repair of environmental damage to one strand of DNA (loss of purines due to thermal fluctuations, formation of pyrimidine dimers by UV irradiation). The site of damage is recognised, excised by an endonuclease, the correct sequence is copied from the complementary strand by a polymerase and the ends of this correct sequence are joined to the rest of the strand by a ligase. The term is sometimes restricted to bacterial systems where the polymerase also acts as endonuclease. (11 Nov 1997) |
| excisional biopsy | <surgery> Surgical removal of a lump or suspicious tissue by cutting the skin and removing the tissue. (09 Oct 1997) |
| excisionase | <enzyme> Acidic protein containing 66 amino acids; the xis gene is transcribed away form the viral attachment site; involved in site-specific recombination of staphylococcal bacteriophage phi 11; amino acid sequence has been determined Registry number: EC 2.7.7.- Synonym: xis protein, xis gene product (26 Jun 1999) |
| excitability | 1. The quality of being readily excited; proneness to be affected by exciting causes. 2. <physiology> The property manifested by living organisms, and the elements and tissues of which they are constituted, of responding to the action of stimulants; irritability; as, nervous excitability. Origin: Cf. F. Excitabilite. Source: Websters Dictionary (01 Mar 1998) |
| excitable | 1. Capable of quick response to a stimulus; having potentiality for emotional arousal. Compare: irritable. 2. In neurophysiology, referring to a tissue, cell, or membrane capable of undergoing excitation in response to an adequate stimulus. (05 Mar 2000) |
| excitable area | Area of the frontal lobe concerned with primary motor control. It lies anterior to the central sulcus. (12 Dec 1998) |
| excitable cell | <cell biology, physiology> A cell in which the membrane response to depolarisations is nonlinear, causing amplification and propagation of the depolarisation (an action potential). Apart from neurons and muscle cells, electrical excitability can be observed in fertilized eggs, some plants and glandular tissue. Excitable cells contain voltage gated ion channels. (18 Nov 1997) |
| excitable gap | A short period in the cycle of the atrioventricular or intraventricular conduction allowing passage of an impulse which at other times would be blocked in transit. Synonym: excitable gap. (05 Mar 2000) |
| excitant | <physiology> An agent or influence which arouses vital activity, or produces increased action, in a living organism or in any of its tissues or parts; a stimulant. Source: Websters Dictionary (01 Mar 1998) |
| excitation | <physics, psychology> An act of irritation or stimulation or of responding to a stimulus, the addition of energy, as the excitation of a molecule by absorption of photons. Origin: L. Excitatio, citare = to call (18 Nov 1997) |
Synonyms : Excitatory Amino Acid, Acid, Excitatory Amino, Acids, Excitatory Amino, Amino Acid, Excitatory
Synonyms : Excitatory Postsynaptic Potential, Postsynaptic Potential, Excitatory, Postsynaptic Potentials, Excitatory, Potential, Excitatory Postsynaptic, Potentials, Excitatory Postsynaptic
| excitableness |
excitability: being easily excited
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| excitement |
exhilaration: the feeling of lively and cheerful joy; "he could hardly conceal his excitement when she agreed" the state of being emotionally aroused and worked up; "his face was flushed with excitement and his hands trembled"; "he tried to calm those who were in a state of extreme inflammation" excitation: something that agitates and arouses; "he looked forward to the excitements of the day" agitation: disturbance usually in protest
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| excoriate |
condemn: express strong disapproval of; "We condemn the racism in South Africa"; "These ideas were reprobated" chafe: tear or wear off the skin or make sore by abrading; "This leash chafes the dog's neck"
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| excrescent |
forming an outgrowth (usually an excessive outgrowth)
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| excise |
strike: remove by erasing or crossing out or as if by drawing a line; "Please strike this remark from the record"; "scratch that remark" levy an excise tax on a tax that is measured by the amount of business done (not on property or income from real estate) remove by cutting; "The surgeon excised the tumor"
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| exc | prevent from being included or considered or accepted |
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| exc | take exception to |
| exc | a deliberate act of omission |
| exc | an instance that does not conform to a rule or generalization |
| exc | grounds for adverse criticism |
| exc | liable to objection or debate |
| exc | surpassing what is common or usual or expected |
| exc | (psychology) deviating widely from a norm of physical or mental ability |
| exc | far beyond what is usual in magnitude or degree |
| exc | to an exceptional degree |
| exc | a passage selected from a larger work |
| exc | take out of a literary work in order to cite or copy |