| TOF | 1) Tetralogy Of Fallot ? CIx of Corrective Op ... |
|---|---|
| TOF | tetralogy of Fallot; time-of-flight; train of four [monitor]; tracheo[o]esophageal fistula |
| ETL | echo train length; expiratory threshold load |
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| L/S | lactase/sucrase [ratio]; lecithin/ sphingomyelin [ratio]; lipid/saccharide [ratio]; longitudinal sec... |
| TOF | Train of Four |
|---|---|
| ETL | echo train length |
| 4-D | Four-dimensional |
| PF4 | Platelet factor-four |
| 4 VO | four-vessel occlusion |
| train-of-four stimulus | A method for measuring magnitude and type of neuromuscular blockade, based upon the ratio of the amplitude of the fourth evoked mechanical response to the first one, when four supramaximal 2-Hz electrical currents are applied for 2 seconds to a peripheral motor nerve. (05 Mar 2000) |
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| train | 1. To be drilled in military exercises; to do duty in a military company. 2. To prepare by exercise, diet, instruction, etc, for any physical contest; as, to train for a boat race. 1. That which draws along; especially, persuasion, artifice, or enticement; allurement. "Now to my charms, and to my wily trains." 2. Hence, something tied to a lure to entice a hawk; also, a trap for an animal; a snare. "With cunning trains him to entrap un wares." (Spenser) 3. That which is drawn along in the rear of, or after, something; that which is in the hinder part or rear. Specifically: That part of a gown which trails behind the wearer. The after part of a gun carriage; the trail. The tail of a bird. "The train steers their flights, and turns their bodies, like the rudder of ship." 4. A number of followers; a body of attendants; a retinue; a suite. "The king's daughter with a lovely train." (Addison) "My train are men of choice and rarest parts." (Shak) 5. A consecution or succession of connected things; a series. "A train of happy sentiments." "The train of ills our love would draw behind it." (Addison) "Rivers now Stream and perpetual draw their humid train." (Milton) "Other truths require a train of ideas placed in order." (Locke) 6. Regular method; process; course; order; as, things now in a train for settlement. "If things were once in this train, . . . Our duty would take root in our nature." (Swift) 7. The number of beats of a watch in any certain time. 8. A line of gunpowder laid to lead fire to a charge, mine, or the like. 9. A connected line of cars or carriages on a railroad. 10. A heavy, long sleigh used in Canada for the transportation of merchandise, wood, and the like. 11. A roll train; as, a 12-inch train. Roll train, or Train of rolls, a tackle for running guns in and out. Train, Cars. Train is the word universally used in England with reference to railroad traveling; as, I came in the morning train. In the United States, the phrase the cars has been extensively introduced in the room of train; as, the cars are late; I came in the cars. The English expression is obviously more appropriate, and is prevailing more and more among Americans, to the exclusion of the cars. Origin: F. Train, OF. Train, trahin; cf. (for some of the senses) F. Traine. See Train. 1. To draw along; to trail; to drag. "In hollow cube Training his devilish enginery." (Milton) 2. To draw by persuasion, artifice, or the like; to attract by stratagem; to entice; to allure. "If but a dozen French Were there in arms, they would be as a call To train ten thousand English to their side." (Shak) "O, train me not, sweet mermaid, with thy note." (Shak) "This feast, I'll gage my life, Is but a plot to train you to your ruin." (Ford) 3. To teach and form by practice; to educate; to exercise; to discipline; as, to train the militia to the manual exercise; to train soldiers to the use of arms. "Our trained bands, which are the trustiest and most proper strength of a free nation." (Milton) "The warrior horse here bred he's taught to train." (Dryden) 4. To break, tame, and accustom to draw, as oxen. 5. <botany> To lead or direct, and form to a wall or espalier; to form to a proper shape, by bending, lopping, or pruning; as, to train young trees. "He trained the young branches to the right hand or to the left." (Jeffrey) 6. <chemical> To trace, as a lode or any mineral appearance, to its head. To train a gun, to point it at some object either forward or else abaft the beam, that is, not directly on the side. To train, or To train up, to educate; to teach; to form by instruction or practice; to bring up. "Train up a child in the way he should go; and when he is old, he will not depart from it." (Prov. Xxii. 6) "The first Christians were, by great hardships, trained up for glory." (Tillotson) Origin: OF. Trahiner, trainer,F. Trainer, LL. Trahinare, trainare, fr. L. Trahere to draw. See Trail. Source: Websters Dictionary (01 Mar 1998) |
| carre-four sensitif | A term given by Charcot to the posterior portion of the caudal limb of the internal capsule. Origin: Fr. Sensory crossroads (05 Mar 2000) |
| echocardiography, four-dimensional | Dynamic three-dimensional echocardiography using the added dimension of time to impart the cinematic perception of motion. (mayo clin proc 1993;68:221-40) (12 Dec 1998) |
| four-o'clock | 1. <botany> A plant of the genus Mirabilis. There are about half a dozen species, natives of the warmer parts of America. The common four-o'clock is M. Jalapa. Its flowers are white, yellow, and red, and open toward sunset, or earlier in cloudy weather; hence the name. It is also called marvel of Peru, and afternoon lady. 2. <zoology> The friar bird; so called from its cry, which resembles these words. Source: Websters Dictionary (01 Mar 1998) |
| four-poster | A large bedstead with tall posts at the corners to support curtains. Source: Websters Dictionary (01 Mar 1998) |
| four-strand crossing over | Crossing over with both strands of DNA from each sister chromatid, so that both strands from one chromatid are exchanged for both strands on the other. This is different from the usual case where only one of the two DNA strands on one sister chromatid is exchanged for the one matching strand (of the two strands) on the other sister chromatid. (09 Oct 1997) |
| four-tailed bandage | A strip of cloth split in two except for a central portion placed under the chin, with four tails tied over the head; used to limit motion of the mandible. (05 Mar 2000) |
| absolute terminal innervation ratio | The number of motor endplates divided by the number of terminal axons related to them. (05 Mar 2000) |
| accommodative convergence-accommodation ratio | The amount of convergence (measured in prism diopters of convergence) divided by the amount of accommodation (measured in diopters) required to direct both eyes upon an object. (05 Mar 2000) |
| A/G ratio | <abbreviation> Albumin-globulin ratio. (05 Mar 2000) |
| albumin-globulin ratio | The ratio of albumin to globulin in the serum or in the urine in kidney disease; the normal ratio in the serum is approximately 1.55. (05 Mar 2000) |
| ALT:AST ratio | The ratio of serum alanine aminotransferase to serum aspartate aminotransferase; elevated serum levels of both enzymes characterise hepatic disease; when both levels are abnormally elevated and the ALT:AST ratio is greater than 1.0, severe hepatic necrosis or alcoholic hepatic disease is likely; when the ratio is less than 1.0, an acute non-alcoholic hepatic condition is favoured. (05 Mar 2000) |
| amylase-creatinine clearance ratio | A test for the diagnosis of acute pancreatitis; it is determined by measuring amylase and creatinine in serum and urine in apparently healthy individuals the renal clearance of amylase is less than 5% that of creatinine; in acute pancreatitis the ratio is said to be greater than 0.05 or 5%. (05 Mar 2000) |
| aspect ratio | <radiobiology> In toroidal geometry, the ratio of the major diameter (total width of the torus) to the minor diameter (width of a slice taken through one side of the ring). In inertial-confinement fusion, aspect ratio refers to the ratio of a fuel pellet's radius to its wall thickness. (09 Oct 1997) |
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