| SU | salicyluric acid; secretory unit; sensation unit; solar urticaria; sorbent unit; spectrophotometric ... |
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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 |
| SPE | Solar Particle Event |
| SK | solar keratoses |
| SSR | solar simulated radiation |
| sport | 1. That which diverts, and makes mirth; pastime; amusement. "It is as sport a fool do mischief." (prov. X. 23) "Her sports were such as carried riches of knowledge upon the stream of delight." (Sir P. Sidney) "Think it but a minute spent in sport." (Shak) 2. Mock; mockery; contemptuous mirth; derision. "Then make sport at me; then let me be your jest.Shak." 3. That with which one plays, or which is driven about in play; a toy; a plaything; an object of mockery. "Flitting leaves, the sport of every wind." (Dryden) "Never does man appear to greater disadvantage than when he is the sport of his own ungoverned pasions." (John Clarke) 4. Play; idle jingle. "An author who should introduce such a sport of words upon our stage would meet with small applause." (Broome) 5. Diversion of the field, as fowling, hunting, fishing, racing, games, and the like, especially. When money is staked. 6. <botany> A plant or an animal, or part of a plant or animal, which has some peculiarity not usually seen in the species; an abnormal variety or growth. See Sporting plant, under Sporting. 7. A sportsman; a gambler. In sport, in jest; for play or diversion. "So is the man that deceiveth his neighbor, and saith, Am not I in sport?" Synonym: Play, game, diversion, frolic, mirth, mock, mockery, jeer. Origin: Abbreviated frm disport. 1. To play; to frolic; to wanton. "[Fish], sporting with quick glance, Show to the sun their waved coats dropt with gold." (Milton) 2. To practice the diversions of the field or the turf; to be given to betting, as upon races. 3. To trifle. "He sports with his own life." 4. <botany> To assume suddenly a new and different character from the rest of the plant or from the type of the species; said of a bud, shoot, plant, or animal. See Sport. Synonym: To play, frolic, game, wanton. Origin: Sported; Sporting. Source: Websters Dictionary (01 Mar 1998) |
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| sunscreen | A substance that blocks the effect of the sun's harmful rays. Using lotions that contain sunscreens can reduce the risk of skin cancer, including melanoma. (12 Dec 1998) |
| 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) |
| solar | 1. Of or pertaining to the sun; proceeding from the sun; as, the solar system; solar light; solar rays; solar influence. See Solar system, below. 2. <astronomy> Born under the predominant influence of the sun. "And proud beside, as solar people are." (Dryden) 3. Measured by the progress or revolution of the sun in the ecliptic; as, the solar year. 4. Produced by the action of the sun, or peculiarly affected by its influence. "They denominate some herbs solar, and some lunar." (Bacon) Solar cycle. See Cycle. Solar day. See Day. Solar engine, an engine in which the energy of solar heat is used to produce motion, as in evaporating water for a steam engine, or expanding air for an air engine. <botany> Solar flowers, flowers which open and shut daily at certain hours. Solar lamp, an argand lamp. Solar microscope, a microscope consisting essentially, first, of a mirror for reflecting a beam of sunlight through the tube, which sometimes is fixed in a window shutter; secondly, of a condenser, or large lens, for converging the beam upon the object; and, thirdly, of a small lens, or magnifier, for throwing an enlarged image of the object at its focus upon a screen in a dark room or in a darkened box. Solar month. See Month. Solar oil, a paraffin oil used an illuminant and lubricant. <mathematics> Solar phosphori, the sun, with the group of celestial bodies which, held by its attraction, revolve round it. The system comprises the major planets, with their satellites; the minor planets, or asteroids, and the comets; also, the meteorids, the matter that furnishes the zodiacal light, and the rings of Saturn. The satellites that revolve about the major planets are twenty-two in number, of which the Earth has one (see Moon), Mars two, Jupiter five, Saturn nine, Uranus four, and Neptune one. The asteroids, between Mars and Jupiter, thus far discovered (1900), number about five hundred, the first four of which were found near the beginning of the century, and are called Ceres, Pallas, Juno, and Vesta. The principal elements of the major planets, and of the comets seen at more than one perihelion passage, are exhibited in the following tables: I. Major Planets. Symbol.Name.Mean distance that of the Earth being unity.Period in days.Eccentricity.Inclination of orbit.Diameter in miles II. Periodic Comets. Name.Greatest distance from sun.Least distance from sun.Inclination of orbit.Perihelion passage. Deg min 54 Encke's3.314.100.34212 541885.2 Solar telegraph, telegraph for signaling by flashes of reflected sunlight. Solar time. See Apparent time, under Time. Origin: L. Solaris, fr. Sol the sun; akin to As. Sl, Icel. Sl, Goth. Sauil, Lith. Saule, W. Haul,. Sul, Skr. Svar, perhaps to E. Sun:F. Solaire. Cf. Parasol. Sun. Source: Websters Dictionary (01 Mar 1998) |
| solar activity | Any type of variation in the appearance of energy output of the sun. (12 Dec 1998) |
| solar blindness | Damage to the fovea centralis of the retina and the adjacent choroid due to the thermal action of infrared rays, consequent to sungazing or watching a solar eclipse without sufficient eye protection. See: photoretinopathy. Synonym: eclipse blindness, solar blindness. (05 Mar 2000) |
| solar cheilitis | Mucosal atrophy with drying, crusting, and fissuring of the vermillion border of the lower lip in older individuals, resulting from chronic exposure to sunlight; dysplastic (premalignant) changes are noted microscopically, analogous to solar keratosis. Synonym: actinic cheilitis. (05 Mar 2000) |
| solar dermatitis | A dermatitis in photosensitive persons caused by exposure to the sun's rays. (05 Mar 2000) |
| solar elastosis | Elastosis seen histologically in the sun-exposed skin of the elderly or in those who have chronic actinic damage. (05 Mar 2000) |
| solar energy | Energy transmitted from the sun in the form of electromagnetic radiation. (12 Dec 1998) |
| solar fever | A tropical disease caused by dengue virus (Arbovirus), that is transmitted by the bite of an infected mosquito of the genus Aedes). Four severity grades of the illness are seen: grade I (fever and constitutional symptoms), grade II (grade I plus spontaneous bleeding of skin, gums or gastrointestinal tract), grade III (grade II plus agitation and circulatory failure) and grade IV (profound shock). Grade I infection is seen most frequently in world travelers, where it is usually self-limited and rarely fatal. The other grades are referred to as dengue haemorrhagic fever and are often fatal. Dengue haemorrhagic fever appears to be an infection by one of the other dengue viruses. Prior immunity to a different dengue virus type appears to be important in the development of the more serious haemorrhagic form. Vaccines are available. Protection from mosquitoes is an important preventive measure. (27 Sep 1997) |
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