| RD | radial deviation; radiology department; rate difference; Raynaud disease; reaction of degeneration; ... |
|---|---|
| CWS | cell wall skeleton; chest wall stimulation; child welfare service; cold water-soluble; cotton wool s... |
| NGR | narrow gauze roll; nasogastric replacement |
| DAM | data-associated message; degraded amyloid; diacetyl monoxime; diacetylmorphine |
| dam | decameter |
| CBE | cotton bract |
|---|---|
| SEVC | single electrode voltage clamp |
| ROPS | Roll-over protective structures |
| ROT | Roll-over test |
| Dam | DNA adenine methylase |
| rubber dam clamp | A springlike metal piece encircling or grasping the cervix of a tooth and so shaped as to prevent a rubber dam from coming off the tooth. (05 Mar 2000) |
|---|---|
| rubber dam clamp forceps | A forceps with pronged jaws designed to engage the jaws of a rubber dam clamp so that they may be separated to pass over the widest buccolingual contour of a tooth. Synonym: rubber dam clamp forceps. (05 Mar 2000) |
| rubber dam | In surgery, thin strips of rubber used as a surgical drain or barrier, a thin sheet of rubber with holes that is placed over teeth to isolate them from the oral cavity. (05 Mar 2000) |
| rubber shod clamp | A small rubber-tipped clamp that holds sutures in place during surgery. (05 Mar 2000) |
| 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) |
| scleral roll | A ridge of the sclera at the internal scleral sulcus from which ciliary muscle fibres take origin. Synonym: scleral roll. Vascular spur, partial septum between vessels (arteries and veins) at the level of fusion or branching at acute angle. See: calcar. (05 Mar 2000) |
| iliac roll | A sausage-shaped, often painful, nonfluctuating mass, with convexity to the right, palpable in the left iliac fossa, due to induration of the walls of the sigmoid flexure. (05 Mar 2000) |
| fascine roll | <botany> A thick roll consisting of branches, the inner part being dead material, the outer consisting of live branches. (09 Oct 1997) |
| dam | 1. A female parent; used of beasts, especially of quadrupeds; sometimes applied in contempt to a human mother. "Our sire and dam, now confined to horses, are a relic of this age (13th century) . . . .Dame is used of a hen; we now make a great difference between dame and dam." (T. L. K. Oliphant) "The dam runs lowing up end down, Looking the way her harmless young one went." (Shak) 2. A kind or crowned piece in the game of draughts. Origin: OE. Dame mistress, lady; also, mother, dam. See Dame. 1. A barrier to prevent the flow of a liquid; especially, a bank of earth, or wall of any kind, as of masonry or wood, built across a water course, to confine and keep back flowing water. 2. <chemistry> A firebrick wall, or a stone, which forms the front of the hearth of a blast furnace. Dam plate, an iron plate in front of the dam, to strengthen it. Origin: Akin to OLG, D, & Dan. Dam, G. & Sw. Damm, Icel. Dammr, and AS. Fordemman to stop up, Goth. Faordammjan. Source: Websters Dictionary (01 Mar 1998) |
| Dam, C P Henrik | <person>Danish biochemist and Nobel laureate, 1895-1976. See: Dam unit. (05 Mar 2000) |
| dam gene | <molecular biology> A gene that codes for the synthesis of a DNA adenine methylase. (09 Oct 1997) |
| dam methylase | <enzyme> An enzyme responsible for the methylation of adenine residues in specific sequences. Synonym: deoxyadenosine methylase. (05 Mar 2000) |
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