| extinction | 1. <ecology> The death of an entire species. 2. <psychology> The procedure of presenting the conditioned stimulus without reinforcement to an organism previously conditioned. It refers also to the diminution of a conditioned response resulting from this procedure. (27 Jun 1999) |
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| extinction angle | <microscopy> The angle between the nearer vibration direction and a prominent direction of the crystal. It never exceeds 45 degrees (05 Aug 1998) |
| extinction coefficient | <chemistry> A constant used in the Beer-Lambert Law which relates the concentration of the substance being measured (in moles) to the absorbance of the substance in solution (how well the substance in solution blocks light beamed through it from getting out on the other side). (09 Oct 1997) |
| extinction factor | <microscopy> In a polarizing or Differential Interference Contrast microscope, the ratio of the amount of light that is transmitted with the axes of the polars parallel over the amount transmitted with their axes crossed. Unless the lenses are rectified, the extinction factor drops exponentially as the numerical aperture is increased. Acronym: EF (26 Mar 1998) |
| extinction oblique | <microscopy> Vibration directions oblique to the long direction of the crystal or fibre. (05 Aug 1998) |
| extinction parallel | <microscopy> Vibration directions parallel and perpendicular to the long direction of the crystal or fibre. (05 Aug 1998) |
| extinction symmetrical | <microscopy> Vibration directions bisecting a prominent crystal profile angle. (05 Aug 1998) |
| extine | <botany> The outer membrane of the grains of pollen of flowering plants. Origin: L. Exter on the outside. Cf. Intine. Source: Websters Dictionary (01 Mar 1998) |
| extinguish | 1. To abolish; to quench, as a flame; to cause loss of identity; to destroy. 2. In psychology, to progressively abolish a previously conditioned response. See: conditioning. Origin: L. Extinguo, to quench (05 Mar 2000) |
| extirp | To extirpate. "It is impossible to extirp it quite, friar." (Shak). Origin: Cf. F. Extirper. Source: Websters Dictionary (01 Mar 1998) |
| extirpable | Capable of being extirpated or eradicated; as, an extirpable plant. Source: Websters Dictionary (01 Mar 1998) |
| extirpation | The act of extirpating or rooting out, or the state of being extirpated; eradication; excision; total destruction; as, the extirpation of weeds from land, of evil from the heart, of a race of men, of heresy. Origin: L. Extirpatio, exstirpatio: cf. F. Extirpation. Source: Websters Dictionary (01 Mar 1998) |
| extogenous | <biology> Exogenous. Origin: L. Exter outward + genous. Source: Websters Dictionary (01 Mar 1998) |
| Exton | William G., U.S. Physician, 1876-1943. See: Exton reagent. (05 Mar 2000) |
| Exton reagent | 50 g sulfosalicylic acid and 200g Na2SO4-10H2O in a liter of water, used as a test for albumin. (05 Mar 2000) |
| external ophthalmoplegia |
paralysis of the external ocular muscles.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| extraembryonic coelom |
the portion of the coelom external to the embryo, bordered by chorionic mesoderm and the mesoderm of the amnion and yolk sac; it communicates temporarily at the umbilicus with the intraembryonic coelom. Called also exocoelom.
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| extrinsic muscle |
a muscle that does not originate in the same limb or part in which it is inserted.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| extensive anterior myocardial infarction |
infarction of the anterior region of the heart, with a more diffuse distribution than anterior myocardial infarction; it is characterized electrocardiographically by abnormal Q waves in leads I, aV L , and V 1 to V 6 .
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| external aperture of canaliculus of cochlea |
external aperture of cochlear aqueduct, apertura externa canaliculi cochleae.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| EXT | embodying in an outward form |
|---|---|
| EXT | attributing to outside causes |
| EXT | make external or objective, or give reality to |
| EXT | regard as objective |
| EXT | the quality or state of being outside or directed toward or relating to the outside or exterior |
| EXT | embodying in an outward form |
| EXT | attributing to outside causes |
| EXT | make external or objective, or give reality to |
| EXT | regard as objective |
| EXT | with respect to the outside |
| EXT | on or from the outside |
| EXT | sensitivity to stimuli originating outside of the body |