| misc | miscarriage; miscellaneous |
|---|---|
| NGR | narrow gauze roll; nasogastric replacement |
| HL | hairline; hairy leukoplakia; half life; hearing level; hearing loss; heparin lock; histiocytic lymph... |
| LIA | Laser Institute of America; leukemia-associated inhibitory activity; lock-in amplifier; lymphocyte-i... |
| ROPS | Roll-over protective structures |
|---|---|
| ROT | Roll-over test |
locked-in syndrome
| 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) |
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| 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) |
| air-lock | <microscopy> An intermediate, enclosed chamber of a vacuum or pressure system through which an object may be passed without effectively changing the vacuum or pressure of the main body of the system. Reference here is to the vacuum of all electron microscopes. (05 Aug 1998) |
| key-in-lock manoeuvre | A method by which obstetrical forceps are used to rotate the foetal head. Synonym: DeLee's manoeuvre. (05 Mar 2000) |
| lock | 1. Anything that fastens; specifically, a fastening, as for a door, a lid, a trunk, a drawer, and the like, in which a bolt is moved by a key so as to hold or to release the thing fastened. 2. A fastening together or interlacing; a closing of one thing upon another; a state of being fixed or immovable. "Albemarle Street closed by a lock of carriages." (De Quincey) 3. A place from which egress is prevented, as by a lock. 4. The barrier or works which confine the water of a stream or canal. 5. An inclosure in a canal with gates at each end, used in raising or lowering boats as they pass from one level to another; called also lift lock. 6. That part or apparatus of a firearm by which the charge is exploded; as, a matchlock, flintlock, percussion lock, etc. 7. A device for keeping a wheel from turning. 8. A grapple in wrestling. Detector lock, a lock containing a contrivance for showing whether it as has been tampered with. Lock bay, a range of bond stone. Mortise lock, a door lock inserted in a mortise. Rim lock, a lock fastened to the face of a door, thus differing from a mortise lock. Origin: AS. Loc inclosure, an inclosed place, the fastening of a door, fr. Lucan to lock, fasten; akin to OS. Lukan (in comp), D. Luiken, OHG. Luhhan, Icel. Lka, Goth. Lukan (in comp); cf. Skr. Ruj to break. Cf. Locket. Source: Websters Dictionary (01 Mar 1998) |
| lock-and-key model | A model used to suggest the mode of operation of an enzyme in which the substrate fits into the active site of the protein like a key into a lock. (05 Mar 2000) |
| lock and key models | <chemistry, immunology> Specific recognition in biological systems might be mediated through interactions that depend upon very precise steric matching between receptor and ligand or between enzyme and substrate. The commonly used analogy is between lock and key and implies a precise sterically determined interaction. (18 Nov 1997) |
| lock finger | An affection in which the movement of the finger is arrested for a moment in flexion or extension and then continues with a jerk. Synonym: jerk finger, lock finger, snap finger, spring finger, stuck finger. (05 Mar 2000) |
| lock hospital | A hospital for the treatment of venereal diseases. Source: Websters Dictionary (01 Mar 1998) |
| lock step | A mode of marching by a body of men going one after another as closely as possible, in which the leg of each moves at the same time with the corresponding leg of the person before him. Source: Websters Dictionary (01 Mar 1998) |
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