| film speed | The relative sensitivity of film emulsion to light or radiation exposure; speed is inversely related to detail resolution. (05 Mar 2000) |
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| speed | 1. To go; to fare. "To warn him now he is too farre sped." (Remedy of Love) 2. To experience in going; to have any condition, good or ill; to fare. "Ships heretofore in seas lke fishes sped; The mightiest still upon the smallest fed." (Waller) 3. To fare well; to have success; to prosper. "Save London, and send true lawyers their meed! For whoso wants money with them shall not speed!" (Lydgate) "I told ye then he should prevail, and speed On his bad errand." (Milton) 4. To make haste; to move with celerity. "I have speeded hither with the very extremest inch of possibility." (Shak) 5. To be expedient. Origin: AS. Spdan, fr. Spd, n.; akin to D. Spoeden, G. Sich sputen. See Speed. 1. Prosperity in an undertaking; favorable issue; success. "For common speed." "O Lord God of my master Abraham, I pray thee, send me good speed this day." (Gen. Xxiv. 12) 2. The act or state of moving swiftly; swiftness; velocity; rapidly; rate of motion; dispatch; as, the speed a horse or a vessel. "Speed, to describe whose swiftness number fails." (Milton) In kinematics, speedis sometimes used to denote the amount of velocity without regard to direction of motion, while velocity is not regarded as known unless both the direction and the amount are known. 3. One who, or that which, causes or promotes speed or success. "Hercules be thy speed!" God speed, Good speed; prosperity. See Godspeed. Speed gauge, Speed indicator, and Speed recorder, a power lathe with a rapidly revolving spindle, for turning small objects, for polishing, etc.; a hand lathe. Speed pulley, a cone pulley with steps. Synonym: Haste, swiftness, celerity, quickness, dispatch, expedition, hurry, acceleration. See Haste. Origin: AS. Spd success, swiftness, from spwan to succeed; akin to D. Spoedd, OHG. Spuot success, spuot to succees, Skr. Spha to increase, grow fat. B. Source: Websters Dictionary (01 Mar 1998) |
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| swimming speed | <marine biology> Swimming speeds of stream fish vary from essentially zero to over six metres per second, depending upon species, size, and activity. Three categories of performance are generally recognised: 1. Burst (darting) speed: The speed that a fish can maintain for a very short time, generally 5 to 10 seconds, without gross variation in performance. Burst speed is employed for feeding or escape, and represents maximum swimming speed. 2. Cruising speed: The speed that a fish can maintain for an extended period of time without fatigue. This implies a lack of stress, and is the maximum speed traveled by undisturbed individuals. 3. Sustained (prolonged) speed: The speed that a fish can maintain for a prolonged period, but which ultimately results in fatigue. at this speed the fish is under some degree of stress. (19 Jan 1998) |
| absorbable gelatin film | A sterile, nonantigenic, absorbable, water-insoluble, thin sheet of gelatin prepared by drying a gelatin-formaldehyde solution on plates; used in the closure and repair of defects in membranes such as the dura mater or the pleura; it undergoes absorption over a period of 1 to 6 months. (05 Mar 2000) |
| bitewing film | A special packaging of radiographic film that allows appendage of the film package to be held between the occlusal surfaces of the teeth. (05 Mar 2000) |
| gallium uptake with normal chest film | <radiology> Pulmonary drug toxicity, tumour infiltration, sarcoidosis, pneumocystis carinii see: lung: gallium imaging (12 Dec 1998) |
| panoramic X-ray film | In dentistry, a radiograph taken to give a panoramic view of the entire upper and lower dental arch as well as the temporomandibular joints. (05 Mar 2000) |
| rapid film changer | A device that moves film for radiographic studies that require rapid serial X-ray exposures, such as angiography. Synonym: rapid film changer, serial film changer. (05 Mar 2000) |
| chest film | most common X-ray used to detect abnormalities in or within the thoracic cage, such as the lungs, heart, aorta, and the bones of the chest. Extra metallic objects, such as jewelry are removed from the chest and neck areas for a chest X-ray to avoid interference with x-ray penetration and improve accuracy of the interpretation. (12 Dec 1998) |
| right or left lateral decubitus film | A radiograph exposed with the subject in the decubitus position; named for the side that is dependent. Synonym: right or left lateral decubitus film. (05 Mar 2000) |
| plain film | A radiograph made without use of a contrast medium. (05 Mar 2000) |
| wide-latitude film | Film that does not show large contrast differences with differences in exposure; the slope of the H and D curve is low. Synonym: latitude film. (05 Mar 2000) |
| precorneal film | A protective film, 7 to 9 nm thick, consisting of external oily, intermediate watery, and deep mucoprotein layers. Synonym: tear film. (05 Mar 2000) |
| X-ray film | A film base coated with an emulsion designed for use with X-rays. (12 Dec 1998) |
| scout film | A radiograph exposed before contrast medium is given, such as the preliminary film for an angiogram, urogram, or barium contrast gastrointestinal examination. Synonym: scout radiograph. (05 Mar 2000) |
| screen-film contact | The closeness and uniformity with which the X-ray film in a cassette lies against the screen. Image resolution is dependent on this closeness and uniformity of contact. (05 Mar 2000) |