| scanner | A device or instrument that scans. (05 Mar 2000) |
|---|---|
| health care sector | Economic sector concerned with the provision, distribution, and consumption of health care services and related products. (12 Dec 1998) |
| private sector | That distinct portion of the institutional, industrial, or economic structure of a country that is controlled or owned by non-governmental, private interests. (12 Dec 1998) |
| sector | 1. <geometry> A part of a circle comprehended between two radii and the included arc. 2. A mathematical instrument, consisting of two rulers connected at one end by a joint, each arm marked with several scales, as of equal parts, chords, sines, tangents, etc, one scale of each kind on each arm, and all on lines radiating from the common center of motion. The sector is used for plotting, etc, to any scale. 3. An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector. Dip sector, an instrument used for measuring the dip of the horizon. Sector of a sphere, or Spherical sector, the solid generated by the revolution of the sector of a circle about one of its radii, or, more rarely, about any straight line drawn in the plane of the sector through its vertex. Origin: L, properly, a cutter, fr. Secare, sectum, to cut: cf. F. Secteur. See Section. Source: Websters Dictionary (01 Mar 1998) |
| sector scan | In ultrasonography, a system in which the transducer or transmitted ultrasound beam is rotated through an angle, resulting in a pie-shaped image. (05 Mar 2000) |
| public sector | The area of a nation's economy that is tax-supported and under government control. (12 Dec 1998) |
| economic sector | A subdivision of economic activities based on major purpose (for example, "commercial sector" or "private sector"). (05 Dec 1998) |
| assisted mechanical ventilation | <anaesthetics> The use of a mechanical device to fill the lungs with oxygenated air then allow time for passive exhalation. (27 Sep 1997) |
| ventilators, mechanical | Mechanical devices used to produce or assist pulmonary ventilation. (12 Dec 1998) |
| mechanical | 1. Pertaining to, governed by, or in accordance with, mechanics, or the laws of motion; pertaining to the quantitative relations of force and matter, as distinguished from mental, vital, chemical, etc.; as, mechanical principles; a mechanical theory; mechanical deposits. 2. Of or pertaining to a machine or to machinery or tools; made or formed by a machine or with tools; as, mechanical precision; mechanical products. "We have also divers mechanical arts." (Bacon) 3. Done as if by a machine; uninfluenced by will or emotion; proceeding automatically, or by habit, without special intention or reflection; as, mechanical singing; mechanical verses; mechanical service. 4. Made and operated by interaction of forces without a directing intelligence; as, a mechanical universe. 5. Obtained by trial, by measurements, etc.; approximate; empirical. See the 2d Note under Geometric. Mechanical effect, effective power; useful work exerted, as by a machine, in a definite time. Mechanical engineering. See the Note under Engineering. Mechanical manoeuvres, the application of mechanical appliances to the mounting, dismounting, and moving of artillery. Mechanical philosophy, the principles of mechanics applied to the inverstigation of physical phenomena. Mechanical powers, certain simple instruments, such as the lever and its modifications (the wheel and axle and the pulley), the inclined plane with its modifications (the screw and the wedge), which convert a small force acting throught a great space into a great force acting through a small space, or vice versa, and are used separately or in combination. <mathematics> Mechanical solution, a solution of a problem by any art or contrivance not strictly geometrical, as by means of the ruler and compasses, or other instruments. Origin: From Mechanic. Source: Websters Dictionary (01 Mar 1998) |
| mechanical abrasion | <procedure, surgery> A surgical procedure which involves the controlled abrasion of the upper layers of the skin to smoothen the skin and remove wrinkles, small scars or foreign bodies (tattoos). (27 Sep 1997) |
| mechanical alternation of the heart | A disorder in which contractions of the heart are regular but are alternately stronger and weaker. (05 Mar 2000) |
| mechanical antidote | A substance that prevents the absorption of a poison. (05 Mar 2000) |
| mechanical dysmenorrhoea | Dysmenorrhoea due to obstruction of discharge of menstrual blood, as in cervical stenosis. Synonym: obstructive dysmenorrhoea. (05 Mar 2000) |
| mechanical heart | Term loosely applied to any mechanical circulatory assist device. (05 Mar 2000) |