| EBI | emetine bismuth iodide; erythroblastic island; estradiol binding index |
|---|---|
| is | in situ; island; islet; isolated |
| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
| TOP | termination of pregnancy; topoisomerase |
| top | topical |
| BBTV | Banana bunchy top virus |
|---|---|
| BCTV | Beet curly top virus |
| TOP | termination of pregnancy |
| CIMP | CpG island methylator phenotype |
| HPI | High-Pathogenicity Island |
| top | 1. To cover on the top; to tip; to cap; chiefly used in the past participle. "Like moving mountains topped with snow." (Waller) "A mount Of alabaster, topped with golden spires." (Milton) 2. To rise above; to excel; to outgo; to surpass. "Topping all others in boasting." (Shak) "Edmund the base shall top the legitimate." (Shak) 3. To rise to the top of; to go over the top of. "But wind about till thou hast topped the hill." (Denham) 4. To take off the or upper part of; to crop. "Top your rose trees a little with your knife." (Evelyn) 5. To perform eminently, or better than before. "From endeavoring universally to top their parts, they will go universally beyond them." (Jeffrey) 6. To raise one end of, as a yard, so that that end becomes higher than the other. To top off, to complete by putting on, or finishing, the top or uppermost part of; as, to top off a stack of hay; hence, to complete; to finish; to adorn. 1. A child's toy, commonly in the form of a conoid or pear, made to spin on its point, usually by drawing off a string wound round its surface or stem, the motion being sometimes continued by means of a whip. 2. A plug, or conical block of wood, with longitudital grooves on its surface, in which the strands of the rope slide in the process of twisting. Origin: CF. OD. Dop, top, OHG, MNG, & dial. G. Topf; perhaps akin to G. Topf a pot. 1. The highest part of anything; the upper end, edge, or extremity; the upper side or surface; summit; apex; vertex; cover; lid; as, the top of a spire; the top of a house; the top of a mountain; the top of the ground. "The star that bids the shepherd fold, Now the top of heaven doth hold." (Milton) 2. The utmost degree; the acme; the summit. "The top of my ambition is to contribute to that work." (Pope) 3. The highest rank; the most honorable position; the utmost attainable place; as, to be at the top of one's class, or at the top of the school. "And wears upon hisbaby brow the round And top of sovereignty." (Shak) 4. The chief person; the most prominent one. "Other . . . Aspired to be the top of zealots." (Milton) 5. The crown of the head, or the hair upon it; the head. "From top to toe" "All the stored vengeance of Heaven fall On her ungrateful top !" (Shak) 6. The head, or upper part, of a plant. "The buds . . . Are called heads, or tops, as cabbageheads." (I. Watts) 7. A platform surrounding the head of the lower mast and projecting on all sudes. It serves to spead the topmast rigging, thus strengheningthe mast, and also furnishes a convenient standing place for the men aloft. 8. A bundle or ball of slivers of comkbed wool, from which the noils, or dust, have been taken out. 9. Eve; verge; point. "He was upon the top of his marriage with Magdaleine." 10. The part of a cut gem between the girdle, or circumference, and the table, or flat upper surface. Top is often used adjectively or as the first part of compound words, usually self-explaining; as, top stone, or topstone; top-boots, or top boots; top soil, or top-soil. Top and but, a phrase used to denote a method of working long tapering planks by bringing the but of one plank to the top of the other to make up a constant breadth in two layers. <zoology> Top minnow, a small viviparous fresh water fish (Gambusia patruelis) abundant in the Southern United States. Also applied to other similar species. Origin: AS. Top; akin to OFries. Top a tuft, D. Top top, OHG. Zopf end, tip, tuft of hair, G. Zopf tuft of hair, pigtail, top of a tree, Icel. Toppr a tuft of hair, crest, top, Dan. Top, Sw. Topp pinnacle, top; of uncertain origin. Cf. Tuft. Source: Websters Dictionary (01 Mar 1998) |
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| top-shaped | <botany> Having the shape of a top; cone-shaped, with the apex downward; turbinate. Source: Websters Dictionary (01 Mar 1998) |
| top-shell | <zoology> Any one of numerous species of marine top_shaped shells of the genus Thochus, or family Trochidae. Source: Websters Dictionary (01 Mar 1998) |
| turban-top | <botany> A kind of fungus with an irregularly wrinkled, somewhat globular pileus (Helvella, or Gyromitra, esculenta). Source: Websters Dictionary (01 Mar 1998) |
| flat top waves | Activity in the electroencephalogram having a pattern suggesting a flat top; these wave's are often found in temporal lobe discharges. (05 Mar 2000) |
| bam island | <molecular biology> Areas of DNA which do not get transcribed, consisting of many repeats of the same sequence of nucleotide bases. (13 Nov 1997) |
| blood island | An aggregation of splanchnic mesodermal cells on the embryonic yolk sac, with the potentiality of forming vascular endothelium and primitive blood cells. Synonym: blood islet. (05 Mar 2000) |
| bone island | <radiology> Small, intramedullary island of compact bone, usually negative on bone scan, shaggy, slightly stellate border, Differential diagnosis: osteoid osteoma, multiple leading to osteopoikilosis (12 Dec 1998) |
| magnetic island | <physics> A magnetic topology near a rational surface where the flux surface is broken up into tubes which are not connected with each other poloidally. Islands may develop in non-ideal magnetohydrodynamic fluids, where electrical resistance becomes important and magnetic field lines are no longer frozen-in to the fluid. Then magnetic tearing and reconnection may allow field lines to link up and form islands with a local magnetic axis in a narrow region near a rational surface. (See also magnetohydrodynamic, frozen-in law). The development of islands may be caused by a small perturbation, whether internal or external, whether deliberate or accidental, and is usually associated with enhanced transport (i.e., reduced confinement). The centres of the islands are magnetic O-points, while the boundaries between islands are marked by X-points. (09 Oct 1997) |
| pitcairn island | An island in polynesia, in the south pacific ocean. It was discovered in 1767 by philip carteret, uninhabited until 1790 when settled by mutineers from the english ship, bounty. The settlement was discovered in 1808; the population was removed temporarily to tahiti in 1831 and to norfolk island (between new caledonia and new zealand) in 1856. Some later returned to pitcairn and their descendents constitute the present population of this british colony. The island is named for the midshipman who first sighted it from the ship. (12 Dec 1998) |
| CpG island | <molecular biology> Region of genomic DNA rich in the dinucleotide C G. Methylation of the C in the dinucleotide is maintained through cell divisions and profoundly affects the degree of transcription of the nearby genes and is important in developmental regulation of gene expression. (18 Nov 1997) |
| cpg-rich island | <molecular biology> Areas of DNA which consist mostly of the base pair sequence CGCGCGCG. (alternating cytosine and guanine nucleotide bases) that are usually found upstream of many genes and are thought to help regulate gene expression. They are often methylated (have methyl groups attached to the DNA segments). (28 May 1998) |
| prince edward island | An island in the gulf of st. Lawrence constituting a province of canada in the eastern part of the country. It is very irregular in shape with many deep inlets. Its capital is charlottetown. Discovered by the french in 1534 and originally named ile saint-jean, it was renamed in 1799 in honor of prince edward, fourth son of george III and future father of queen victoria. (12 Dec 1998) |
| island | 1. <geography> A tract of land surrounded by water, and smaller than a continent. Cf. Continent. 2. Anything regarded as resembling an island; as, an island of ice. Origin: OE. Iland, yland, AS. Igland, gland, glond; ig, g, island + land, lond, land. AS. Ig, g, is akin to AS. Ea water, river, OHG. Uwa, G. Au meadow, Icel. Ey island, Dan. & Sw. O, Goth. Ahwa a stream, water, L. Aqua water. The s is due to confusion with isle. Cf. Ait, Eyot, Ewer, Aquatic. Source: Websters Dictionary (01 Mar 1998) |
| island disease | See Typhus, scrub. (12 Dec 1998) |
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