| role | The expected and characteristic pattern of behaviour exhibited by an individual as a member of a particular social group. (12 Dec 1998) |
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| role conflict | The dilemma an individual experiences when required to play two different parts (e.g., spouse and aggressive business competitor) that cannot be easily harmonised. (05 Mar 2000) |
| role playing | 1. The adopting or performing the role of another significant individual in order to gain insight into the behaviour of that person. 2. <psychology> A psychotherapeutic method used in psychodrama to understand and treat emotional conflicts through the enactment or re-enactment of stressful interpersonal events. See: psychodrama. (05 Mar 2000) |
| rolitetracycline | <chemical> 4s-(4 alpha, 4a alpha,5a alpha,6 beta,12a alpha))-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-n-(1-pyrrolidinylmethyl)-2-naphthacenecarboxamide. A semisynthetic antibiotic prepared from tetracycline. It is usually administered as an injection. Pharmacological action: antibiotics, tetracycline. Chemical name: 2-Naphthacenecarboxamide, 4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-N-(1-pyrrolidinylmethyl)-, (4S-(4alpha,4aalpha,5aalpha,6beta,12aalpha))- (12 Dec 1998) |
| roll | 1. The act of rolling, or state of being rolled; as, the roll of a ball; the roll of waves. 2. That which rolls; a roller. Specifically: A heavy cylinder used to break clods. One of a set of revolving cylinders, or rollers, between which metal is pressed, formed, or smoothed, as in a rolling mill; as, to pass rails through the rolls. 3. That which is rolled up; as, a roll of fat, of wool, paper, cloth, etc. Specifically: A document written on a piece of parchment, paper, or other materials which may be rolled up; a scroll. "Busy angels spread The lasting roll, recording what we say." (Prior) Hence, an official or public document; a register; a record; also, a catalogue; a list. "The rolls of Parliament, the entry of the petitions, answers, and transactions in Parliament, are extant." (Sir M. Hale) "The roll and list of that army doth remain." (Sir J. Davies) A quantity of cloth wound into a cylindrical form; as, a roll of carpeting; a roll of ribbon. A cylindrical twist of tobacco. 4. A kind of shortened raised biscuit or bread, often rolled or doubled upon itself. 5. The oscillating movement of a vessel from side to side, in sea way, as distinguished from the alternate rise and fall of bow and stern called pitching. 6. A heavy, reverberatory sound; as, the roll of cannon, or of thunder. 7. The uniform beating of a drum with strokes so rapid as scarcely to be distinguished by the ear. 8. Part; office; duty; role. Long roll, a prolonged roll of the drums, as the signal of an attack by the enemy, and for the troops to arrange themselves in line. Master of the rolls. See Master. Roll call, the act, or the time, of calling over a list names, as among soldiers. Rolls of court, of parliament (or of any public body), the parchments or rolls on which the acts and proceedings of that body are engrossed by the proper officer, and which constitute the records of such public body. To call the roll, to call off or recite a list or roll of names of persons belonging to an organization, in order to ascertain who are present or to obtain responses from those present. Synonym: List, schedule, catalogue, register, inventory. See List. Origin: F. Role a roll (in sense 3), fr. L. Rotulus little wheel, LL, a roll, dim. Of L. Rota a wheel. See Roll, and cf. Role, Rouleau, Roulette. 1. To cause to revolve by turning over and over; to move by turning on an axis; to impel forward by causing to turn over and over on a supporting surface; as, to roll a wheel, a ball, or a barrel. 2. To wrap round on itself; to form into a spherical or cylindrical body by causing to turn over and over; as, to roll a sheet of paper; to roll parchment; to roll clay or putty into a ball. 3. To bind or involve by winding, as in a bandage; to inwrap; often with up; as, to roll up a parcel. 4. To drive or impel forward with an easy motion, as of rolling; as, a river rolls its waters to the ocean. "The flood of Catholic reaction was rolled over Europe." (J. A. Symonds) 5. To utter copiously, especially. With sounding words; to utter with a deep sound; often with forth, or out; as, to roll forth some one's praises; to roll out sentences. "Who roll'd the psalm to wintry skies." (Tennyson) 6. To press or level with a roller; to spread or form with a roll, roller, or rollers; as, to roll a field; to roll paste; to roll steel rails, etc. 7. To move, or cause to be moved, upon, or by means of, rollers or small wheels. 8. To beat with rapid, continuous strokes, as a drum; to sound a roll upon. 9. <geometry> To apply (one line or surface) to another without slipping; to bring all the parts of (one line or surface) into successive contact with another, in suck manner that at every instant the parts that have been in contact are equal. 10. To turn over in one's mind; to revolve. "Full oft in heart he rolleth up and down The beauty of these florins new and bright." (Chaucer) To roll one's self, to wallow. To roll the eye, to direct its axis hither and thither in quick succession. To roll one's r's, to utter the letter r with a trill. Origin: OF. Roeler, roler, F. Rouler, LL. Rotulare, fr. L. Royulus, rotula, a little wheel, dim. Of rota wheel; akin to G. Rad, and to Skr. Ratha car, chariot. Cf. Control, Roll, Rotary. Source: Websters Dictionary (01 Mar 1998) |
| roll sulfur | Sublimed sulfur melted and cast in cylindrical molds; sometimes called brimstone. (05 Mar 2000) |
| roll tube | A modification of the plate culture; a seeded medium containing agar is placed in a test tube which is rolled or spun horizontally until the medium solidifies evenly on the interior of the tube. (05 Mar 2000) |
| roll-tube culture | A culture in a tube of medium which has been melted and allowed to solidify while the tube is being spun; the inside of the tube is thereby coated with a thin layer of solidified medium. (05 Mar 2000) |
| roller | 1. One who, or that which, rolls; especially, a cylinder, sometimes grooved, of wood, stone, metal, etc, used in husbandry and the arts. 2. A bandage; a fillet; properly, a long and broad bandage used in surgery. 3. One of series of long, heavy waves which roll in upon a coast, sometimes in calm weather. 4. A long, belt-formed towel, to be suspended on a rolling cylinder; called also roller towel. 5. A cylinder coated with a composition made principally of glue and molassess, with which forms of type are inked previously to taking an impression from them. 6. A long cylinder on which something is rolled up; as, the roller of a man. 7. A small wheel, as of a caster, a roller skate, etc. 8. <zoology> ANy insect whose larva rolls up leaves; a leaf roller. See Tortrix. 9. <ornithology> Any one of numerous species of Old World picarian birds of the family Coraciadae. The name alludes to their habit of suddenly turning over or "tumbling" in flight. Many of the species are brilliantly coloured. The common European species (Coracias garrula) has the head, neck, and under parts light blue varied with green, the scapulars chestnut brown, and the tail blue, green, and black. The broad-billed rollers of India and Africa belong to the genus Eurystomus, as the oriental roller (E. Orientalis), and the Australian roller, or dollar bird (E. Pacificus). The latter is dark brown on the head and neck, sea green on the back, and bright blue on the throat, base of the tail, and parts of the wings. It has a silvery-white spot on the middle of each wing. 10. <zoology> Any species of small ground snakes of the family Tortricidae. <zoology> Ground roller, any one of several species of Madagascar rollers belonging to Atelornis and allied genera. They are nocturnal birds, and feed on the ground. Roller bolt, the bar in a carriage to which the traces are attached; a whiffletree. Roller gin, a cotton gin inn which rolls are used for separating the seeds from the fibre. Roller mill. See Mill. Roller skate, a skate which has small wheels in the place of the metallic runner; designed for use in skating upon a smooth, hard surface, other than ice. Source: Websters Dictionary (01 Mar 1998) |
| roller bandage | A strip of material, of variable width, rolled into a compact cylinder to facilitate its application. (05 Mar 2000) |
| Roller's nucleus | Lateral nucleus of the accessory nerve, a small bulbar nucleus lying immediately anterior to the hypoglossal nucleus, considered one of the perihypoglossal nuclei. (05 Mar 2000) |
| Roller, Christian | <person> German neurologist and psychiatrist, 1844-1978. See: Roller's nucleus. (05 Mar 2000) |
| Rolleston's rule | The ideal adult systolic blood pressure is 100 plus half the age, whereas the maximal physiologic pressure is 100 plus the age; of historical interest. (05 Mar 2000) |
| Rolleston, Sir Humphry | <person> British physician, 1862-1944. See: Rolleston's rule. (05 Mar 2000) |
| Rollet's stroma | The colourless stroma of the red blood cells. (05 Mar 2000) |
Synonyms :
Synonyms : Ligament, Round, Ligaments, Round, Round Ligaments
Synonyms : Round Windows, Window, Round, Windows, Round
Synonyms : sarcoma virus, Rous, virus, Rous sarcoma
Synonyms : 3-Nitro-10, 3-Nitro-4-Hydroxyphenylarsonic Acid, 3 Nitro 10, 3 Nitro 4 Hydroxyphenylarsonic Acid, 3Nitro10, Acid, 3-Nitro-4-Hydroxyphenylarsonic
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| rose oil |
attar of roses: a volatile fragrant oil obtained from fresh roses by steam distillation
Ãâó: wordnet.princeton.edu/perl/webwn
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|---|---|
| rosemary |
widely cultivated for its fragrant grey-green leaves used in cooking and in perfumery extremely pungent leaves used fresh or dried as seasoning for especially meats
Ãâó: wordnet.princeton.edu/perl/webwn
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| rotary joint |
pivot joint: a freely moving joint in which movement is limited to rotation; "the articulation of the radius and ulna in the arm is a pivot joint"
Ãâó: wordnet.princeton.edu/perl/webwn
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| Rosmarinus |
rosemary
Ãâó: wordnet.princeton.edu/perl/webwn
|
| Rock fever |
brucellosis: infectious bacterial disease of human beings transmitted by contact with infected animals or infected meat or milk products; characterized by fever and headache
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| RO | American inventor who designed the first commercially successful steamboat and the first steam warship (1765-1815) |
|---|---|
| RO | English writer known for his interest in mythology and in the classics (1895-1985) |
| RO | American navigator who twice circumnavigated the globe and who discovered the Columbia River (1755-1806) |
| RO | English lyric poet (1591-1674) |
| RO | English scientist who formulated the law of elasticity and proposed a wave theory of light and formulated a theory of planetary motion and proposed the inverse square law of gravitational attraction and discovered the cellular structure of cork and introduced the term `cell' into biology and invented a balance spring for watches (1635-1703) |
| RO | United States physicist who developed the first successful liquid-fueled rocket (1882-1945) |
| RO | King of Scotland from 1306 to 1329 |
| RO | United States chess master |
| RO | United States choreographer (1930-1988) |
| RO | United States sociologist (born in 1910) |
| RO | German bacteriologist who isolated the anthrax bacillus and the tubercle bacillus and the cholera bacillus (1843-1910) |
| RO | American poet famous for his lyrical poems on country life in New England (1874-1963) |
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