| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
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| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
| TOP | termination of pregnancy; topoisomerase |
| top | topical |
| BBTV | Banana bunchy top virus |
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| BCTV | Beet curly top virus |
| TOP | termination of pregnancy |
| sesame | <botany> Either of two annual herbaceous plants of the genus Sesamum (S. Indicum, and S. Orientale), from the seeds of which an oil is expressed; also, the small obovate, flattish seeds of these plants, sometimes used as food. See Benne. Open Sesame, the magical command which opened the door of the robber's den in the Arabian Nights' tale of "The Forty Thieves;" hence, a magical password. Sesame grass. <botany> Same as Gama grass. Origin: L. Sesamum, sesama, Gr,: cf. F. Sesame. (01 Mar 1998) |
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| sesame oil | <chemical> The refined fixed oil obtained from the seed of one or more cultivated varieties of sesamum indicum. It is used as a solvent and oleaginous vehicle for drugs and has been used internally as a laxative and externally as a skin softener. It is used also in the manufacture of margarine, soap, and cosmetics. Chemical name: Fats and Glyceridic oils, sesame (12 Dec 1998) |
| street drug | A controlled substance taken for non-medical purposes. Street drugs comprise various amphetamines, anaesthetics, barbiturates, opiates, and psychoactive drugs, and many are derived from natural sources (e.g., the plants Papaver somniferum, Cannibis sativa, Amanita pantherina, Lophophora williamsii). Slang names include acid (lysergic acid diethylamide), angel dust (phencyclidine), coke (cocaine), downers (barbiturates), grass (marijuana), hash (concentrated tetrahydrocannibinol), magic mushrooms (psilocybin), mescaline (peyote), speed (amphetamines). During the 1980s, a new class of "designer drugs" arose, mostly analogs of psychoactive substances intended to escape regulation under the Controlled Substances Act. Also, crack cocaine, a potent, smokable form of cocaine, emerged as a major public health problem. In the U.S. Illicit use of drugs such as cocaine, marijuana, and heroin historically has occurred in cycles. Synonym: recreational drug. (05 Mar 2000) |
| street drugs | Drugs obtained and often manufactured illegally for the subjective effects they are said to produce. They are often distributed in urban areas, but are also available in suburban and rural areas, and tend to be grossly impure and may cause unexpected toxicity. (12 Dec 1998) |
| street virus | An isolate of rabies virus from a naturally infected domestic animal. (05 Mar 2000) |
| 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) |
| 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) |
| Bayer's patches | Sites of adhesion between the outer and cytoplasmic membranes of gram-negative bacteria. (18 Nov 1997) |
| Gottron's patches | <clinical sign> Gottron's patches are scaly, patchy redness over the knuckles and is seen in patients with dermatomyositis, an inflammatory muscle disorder. (see polymyositis). (20 Sep 2002) |
| Peyer's patches | Lymphoid organs located in the sub mucosal tissue of the mammalian gut containing very high proportions of IgA secreting precursor cells. The patches have B and T dependent regions and germinal centres. A specialised epithelium lies between the patch and the intestine. Involved in gut associated immunity. (18 Nov 1997) |
| cotton-wool patches | <clinical sign, ophthalmology> White, fuzzy areas on the surface of the retina (accumulations of cellular organelles) caused by damage (usually infarction) of the retinal fibre layer. Synonym: cotton-wool spots. (05 Mar 2000) |
| salmon patches | Red or purple-coloured vascular skin markings that develop shortly after birth. most are usually painless and benign. Some lesions (cavernous haemangiomas) will disappear or become harder to see as the child approaches school age. Localised steroid injections have been used successfully to reduce the size of a birthmark. (27 Sep 1997) |
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