| narrow | 1. Of little breadth; not wide or broad; having little distance from side to side; as, a narrow board; a narrow street; a narrow hem. "Hath passed in safety through the narrow seas." (Shak) 2. Of little extent; very limited; circumscribed. "The Jews were but a small nation, and confined to a narrow compass in the world." (Bp. Wilkins) 3. Having but a little margin; having barely sufficient space, time, or number, etc.; close; near; with special reference to some peril or misfortune; as, a narrow shot; a narrow escape; a narrow majority. 4. Limited as to means; straitened; pinching; as, narrow circumstances. 5. Contracted; of limited scope; illiberal; bigoted; as, a narrow mind; narrow views. "A narrow understanding." 6. Parsimonious; niggardly; covetous; selfish. "A very narrow and stinted charity." (Smalridge) 7. Scrutinizing in detail; close; accurate; exact. "But first with narrow search I must walk round This garden, and no corner leave unspied." (Milton) 8. Formed (as a vowel) by a close position of some part of the tongue in relation to the palate; or (according to Bell) by a tense condition of the pharynx; distinguished from wide; as e (eve) and oo (food), etc, from i (ill) and oo (foot), etc. Narrow is not unfrequently prefixed to words, especially to participles and adjectives, forming compounds of obvious signification; as, narrow-bordered, narrow-brimmed, narrow-breasted, narrow-edged, narrow-faced, narrow-headed, narrow-leaved, narrow-pointed, narrow-souled, narrow-sphered, etc. Narrow gauge. See Note under Gauge. Origin: OE. Narwe, naru, AS. Nearu; akin to OS. Naru, naro. 1. To lessen the breadth of; to contract; to draw into a smaller compass; to reduce the width or extent of. 2. To contract the reach or sphere of; to make less liberal or more selfish; to limit; to confine; to restrict; as, to narrow one's views or knowledge; to narrow a question in discussion. "Our knowledge is much more narrowed if we confine ourselves to our own solitary reasonings." (I. Watts) 3. To contract the size of, as a stocking, by taking two stitches into one. Origin: AS. Nearwian. Source: Websters Dictionary (01 Mar 1998) |
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| narrow-angle glaucoma | angle-closure glaucoma |
| aorticopulmonary window | A small congenital opening between the aorta and pulmonary artery about 1 cm above the semilunar valves, e.g., aorticopulmonary window. Synonym: aorticopulmonary window. (05 Mar 2000) |
| aortic-pulmonic window | The indentation of the left side of the mediastinum by the lung partially interposed between the aortic arch and the left pulmonary artery, seen on frontal radiographs of the chest. Synonym: aortic-pulmonic window. (05 Mar 2000) |
| aortopulmonary window | The indentation of the left side of the mediastinum by the lung partially interposed between the aortic arch and the left pulmonary artery, seen on frontal radiographs of the chest. Synonym: aortic-pulmonic window. (05 Mar 2000) |
| Rebuck skin window technique | An in vivo test of the inflammatory response in which the skin is abraded and a slide applied to the abraded area to permit visualization of leukocyte mobilization. (05 Mar 2000) |
| vestibular window | An oval opening on the medial wall of the tympanic cavity leading into the vestibule, closed in life by the foot of the stapes. Synonym: fenestra of the vestibule, fenestra ovalis, oval window, vestibular window. (05 Mar 2000) |
| pericardial window techniques | Surgical construction of an opening or window in the pericardium. It is often called subxiphoid pericardial window technique. (12 Dec 1998) |
| round window | Fenestra of the cochlea; an opening in the medial wall of the middle ear leading into the cochlea. (12 Dec 1998) |
| cochlear window | An opening on the medial wall of the middle ear leading into the cochlea, closed in life by the secondary tympanic membrane. Synonym: cochlear window, fenestra of the cochlea, fenestra rotunda, round window. (05 Mar 2000) |
| window | 1. An opening in the wall of a building for the admission of light and air, usually closed by casements or sashes containing some transparent material, as glass, and capable of being opened and shut at pleasure. "I leaped from the window of the citadel." (Shak) " Then to come, in spite of sorrow, And at my window bid good morrow." (Milton) 2. The shutter, casement, sash with its fittings, or other framework, which closes a window opening. 3. A figure formed of lines crossing each other. "Till he has windows on his bread and butter." (King) French window, the common European martin. Window tax, a tax or duty formerly levied on all windows, or openings for light, above the number of eight in houses standing in cities or towns. Origin: OE. Windowe, windoge, Icel. Vindauga window, properly, wind eye; akin to Dan. Vindue. See Wind, and Eye. Source: Websters Dictionary (01 Mar 1998) |
| window level | The CT number setting in Hounsfield units of the midpoint of the window width, which is the gray scale of the image; a typical window level for imaging the lungs if -500; for the abdomen, 0. (05 Mar 2000) |
| window width | The range of CT numbers (in Hounsfield units) included in the gray scale video display of the CT image, ranging from 1 to 2000 or 3000, depending on the type of machine. See: window level. (05 Mar 2000) |
| soft tissue window | mediastinal window |
| oval window | Fenestra of the vestibule; an oval opening in the medial wall of the middle ear leading into the vestibule. Normally it is covered by the base of the stapes. (12 Dec 1998) |