| sympathoblast | A primitive cell derived from the neural crest glia; with the pheochromoblasts, sympathoblast's enter into the formation of the adrenal medulla and sympathetic ganglia. Synonym: sympathetoblast, sympathicoblast. Origin: sympatho-+ G. Blastos, germ (05 Mar 2000) |
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| sympathoblastoma | <tumour> Obsolete term for neuroblastoma. Origin: sympathoblast + G. -oma, tumour (05 Mar 2000) |
| sympathochromaffin cell | The cell type in the embryonic suprarenal gland from which both sympathetic ganglion cell's and chromaffin cell's are developed. (05 Mar 2000) |
| sympathogonia | The completely undifferentiated cells of the sympathetic nervous system. Origin: sympatho-+ G. Gone, seed (05 Mar 2000) |
| sympathogonioma | <tumour> Obsolete term for neuroblastoma. Origin: sympathogonia + G. -oma, tumour (05 Mar 2000) |
| sympatholytic | Denoting antagonism to or inhibition of adrenergic nerve activity. See: adrenergic blocking agent, antiadrenergic. Synonym: sympathicolytic. Origin: sympatho-+ G. Lysis, a loosening (05 Mar 2000) |
| sympatholytics | Drugs that inhibit the actions of the sympathetic nervous system by any mechanism. The most common of these are the adrenergic antagonists and drugs that deplete norepinephrine or reduce the release of transmitters from adrenergic postganglionic terminals (see adrenergic agents). Drugs that act in the central nervous system to reduce sympathetic activity (e.g., centrally acting alpha-2 adrenergic agonists, see adrenergic alpha-agonists) are included here. (12 Dec 1998) |
| sympathomimetic | 1. <physiology> The mimicking the effects of impulses conveyed by adrenergic postganglionic fibres of the sympathetic nervous system. 2. <pharmacology> An agent that produces effects similar to those of impulses conveyed by adrenergic postganglionic fibres of the sympathetic nervous system. Usually refers to drugs that mimic the effects of stimulating postganglionic adrenergic sympathetic nerves. Includes drugs that directly stimulate adrenergic receptors and drugs that act indirectly by provoking the release of adrenergic transmitters. Synonym: adrenergic. Origin: Gr. Mimetikos = imitative (12 Dec 1998) |
| sympathomimetic amine | An agent that evokes responses similar to those produced by adrenergic nerve activity (e.g., epinephrine, ephedrine, isoproterenol). Synonym: adrenergic amine, adrenomimetic amine, sympathetic amine. (05 Mar 2000) |
| sympathomimetic amines | A broad class of chemicals which mimic the actions of activation of the sympathetic nervous system and have an amine (usually beta-phenyl-ethylamine) basic structure; examples include isoproterenol, amphetamine, ephedrine, and phenylephrine. (05 Mar 2000) |
| sympathy | 1. Feeling corresponding to that which another feels; the quality of being affected by the affection of another, with feelings correspondent in kind, if not in degree; fellow-feeling. "They saw, but other sight instead a crowd Of ugly serpents! Horror on them fell, And horrid sympathy." (Milton) 2. An agreement of affections or inclinations, or a conformity of natural temperament, which causes persons to be pleased, or in accord, with one another; as, there is perfect sympathy between them. 3. Kindness of feeling toward one who suffers; pity; commiseration; compassion. "I value myself upon sympathy, I hate and despise myself for envy." (Kames) 4. <physiology> The reciprocal influence exercised by the various organs or parts of the body on one another, as manifested in the transmission of a disease by unknown means from one organ to another quite remote, or in the influence exerted by a diseased condition of one part on another part or organ, as in the vomiting produced by a tumour of the brain. That relation which exists between different persons by which one of them produces in the others a state or condition like that of himself. This is shown in the tendency to yawn which a person often feels on seeing another yawn, or the strong inclination to become hysteric experienced by many women on seeing another person suffering with hysteria. 5. A tendency of inanimate things to unite, or to act on each other; as, the sympathy between the loadstone and iron. 6. Similarity of function, use office, or the like. "The adverb has most sympathy with the verb." (Earle) Synonym: Pity, fellow-feeling, compassion, commiseration, tenderness, condolence, agreement. Origin: F. Sympathie, L. Sympathia, Gr.; with + suffering, passion, fr, to suffer. See Syn-, and Pathos. Source: Websters Dictionary (01 Mar 1998) |
| sympatric | <ecology, zoology> Refers to different species or populations of the same species that livein the same geographic area. Compare: allopatric. (19 Jan 1998) |
| sympatric speciation | <biology, ecology, zoology> The evolutionary process of a single population of a species splitting into two populations which gradually evolve into two different species (as a result of genetic mutation and variation) while both diverging populations still occupy the same geographic area. (19 Jan 1998) |
| symperitoneal | Relating to the surgical induction of adhesion between two portions of the peritoneum. (05 Mar 2000) |
| sympetalous | <botany> Having the petals united; gamopetalous. Origin: Pref. Sym- + petal. Source: Websters Dictionary (01 Mar 1998) |
| sympathetic nervous system |
The part of the nervous system that mobilizes the body for action.
출처: highered.mcgraw-hill.com/sites/0072412976/student_...
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| symbiont |
An organism living in symbiosis with another, dissimilar organism.
출처: www.fao.org/docrep/003/X3910E/X3910E22.htm
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| symbiosis |
(Gr. syn, with + bios, life) The close association of two different kinds of living organisms where there is benefit to both or where both receive an advantage from the association. An example is the association of the mycelium of mycorrhizal fungi with roots of seed plants. See commensalism; parasitism.
출처: www.fao.org/docrep/003/X3910E/X3910E22.htm
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| sympodial |
A type of plant development in which the terminal bud of the stem stops growing due to either its abortion or its development into a flower or an inflorescence, and the uppermost lateral bud takes over the further axial growth of the stem.
출처: www.fao.org/docrep/003/X3910E/X3910E22.htm
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| sympathetic nervous system |
the part of the autonomic nervous system that raises blood pressure and heart rate in response to stress
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| sym | sharing the feelings of others (especially feelings of sorrow or anguish) |
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| sym | a relation of affinity or harmony between people |
| sym | a card expressing sympathy |
| sym | a strike in support of other workers who are on strike |
| sym | (of biological species or speciation) occurring in the same or overlapping geographical areas |
| sym | having a corolla composed of partially or wholly fused petals forming a corolla shaped like a tube or funnel |
| sym | used in some classifications for the siamangs |
| sym | large black gibbon of Sumatra having the 2nd and 3rd toes partially united by a web |
| sym | minute arthropod often infesting the underground parts of truck-garden and greenhouse crops |
| sym | harmonious in sound |
| sym | relating to or characteristic or suggestive of a symphony |
| sym | a long and complex sonata for symphony orchestra |