| VD | vapor density; vascular disease; vasodilation, vasodilator; venereal disease; venous dilatation; ven... |
|---|---|
| VPC | 1) Ventricular Premature Contraction 2) Vertical Palmar Crease |
| CVT | cardiovascular technologist; central venous temperature; congenital vertical talus |
| DVD | dissociated vertical deviation |
| IVT | index of vertical transmission; interventional video tomography; intrasound vibration test; intraven... |
| DVD | Dissociated Vertical Deviation |
|---|---|
| OVAR | Off vertical axis rotation |
| SVV | Subjective visual vertical |
| VBG | Vertical Banded Gastroplasty |
| VGP | vertical growth phase |
| meridian | 1. Midday; noon. 2. Hence: The highest point, as of success, prosperity, or the like; culmination. "I have touched the highest point of all my greatness, And from that full meridian of my glory I haste now to my setting." (Shak) 3. <astronomy> A great circle of the sphere passing through the poles of the heavens and the zenith of a given place. It is crossed by the sun at midday. 4. <geography> A great circle on the surface of the earth, passing through the poles and any given place; also, the half of such a circle included between the poles. The planes of the geographical and astronomical meridians coincide. Meridians, on a map or globe, are lines drawn at certain intervals due north and south, or in the direction of the poles. Calculated for, or fitted to, or adapted to, the meridian of, suited to the local circumstances, capabilities, or special requirements of. "All other knowledge merely serves the concerns of this life, and is fitted to the meridian thereof." (Sir M. Hale) First meridian, the meridian from which longitudes are reckoned. The meridian of Greenwich is the one commonly employed in calculations of longitude by geographers, and in actual practice, although in various countries other and different meridians, chiefly those which pass through the capitals of the countries, are occasionally used; as, in France, the meridian of Paris; in the United States, the meridian of Washington, etc. Guide meridian, a line, marked by monuments, running North and South through a section of country between other more carefully established meridians called principal meridians, used for reference in surveying. Magnetic meridian, a great circle, passing through the zenith and coinciding in direction with the magnetic needle, or a line on the earth's surface having the same direction. <astronomy> Meridian circle, any astronomical instrument having a telescope that rotates in a meridian plane. Meridian of a globe, or Brass meridian, a graduated circular ring of brass, in which the artificial globe is suspended and revolves. Origin: F. Meridien. See Meridian. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| meridian of cornea | Any line bisecting the cornea through its apex. (05 Mar 2000) |
| vertical | 1. Of or pertaining to the vertex; situated at the vertex, or highest point; directly overhead, or in the zenith; perpendicularly above one. "Charity . . . Is the vertical top of all religion." (Jer. Taylor) 2. Perpendicular to the plane of the horizon; upright; plumb; as, a vertical line. <astronomy> Vertical angle, an angle measured on a vertical circle, called an angle of elevation, or altitude, when reckoned from the horizon upward, and of depression when downward below the horizon. <botany> Vertical anthers The plane passing through the point of sight, and perpendicular to the ground plane, and also to the picture. Vertical sash, a sash sliding up and down. Cf. French sash, under 3d Sash. Vertical steam engine, a steam engine having the crank shaft vertically above or below a vertical cylinder. Origin: Cf. F. Vertical. See Vertex. 1. Vertical position; zenith. 2. <mathematics> A vertical line, plane, or circle. Prime vertical, Prime vertical dial. See Prime. Source: Websters Dictionary (01 Mar 1998) |
| vertical axis | In dentistry, the line around which the working side condyle rotates in the horizontal plane during mandibular movement. (05 Mar 2000) |
| vertical classification | <zoology> Classification which stresses common descent and tends to unite ancestral and descendant groups of a phyletic line in a single higher taxon, separating them from contemporaneous taxa having reached a similar grade of evolutionary change. Compare: Horizontal classification. (09 Jan 1998) |
| vertical dimension | The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (ovd or vdo) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (vdr) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest position. (12 Dec 1998) |
| vertical displacement event | Disruption which occurs because plasma is not adequately stabilised against vertical motions. (09 Oct 1997) |
| vertical elastic | Elastic material used in a direction perpendicular to the occlusal plane, connecting one arch wire to the other, and usually used to improve intercuspation. (05 Mar 2000) |
| vertical growth phase | Spread of melanoma cells from the epidermis into the dermis and later the subcutis, from which site metastasis may take place. (05 Mar 2000) |
| vertical heart | Loosely descriptive of the heart's electrical axis when this is directed at approximately +90 |
| vertical hymen | A hymen in which the opening is perpendicular. (05 Mar 2000) |
| vertical illumination | <microscopy> Bright field illumination by light from the objective which is reflected or scattered from the (usually opaque) object. Illumination is by means of a vertical illuminator placed above the objective. Light is brought into a side tube and directed toward the back aperture of the objective by a tiny mirror or prism, or else by a full-aperture transparent-reflector (thin glass plate) 45[macron] to the axis of the bodytube. (05 Aug 1998) |
| vertical index | The relation of the height to the length of the skull: (height × 100)/length. Synonym: height-length index, length-height index, transversovertical index. (05 Mar 2000) |
| vertical instability | <radiobiology> A type of magnetohydrodynamic (n=0) instability where the plasma drifts vertically upward. Nearly all tokamaks are vertically unstable (all highly shaped ones are). Controlling this instability is possible in many cases, and is an important facet of machine design. Vertical instabilities give rise to halo effects. (09 Oct 1997) |
| vertical muscle of tongue | An intrinsic muscle of the tongue, consisting of fibres that pass from the aponeurosis of the dorsum to the aponeurosis of the inferior surface; action, decreases the superior to inferior dimension of (flattens) the tongue; nerve supply, hypoglossal for motor, lingual for sensory. Synonym: musculus verticalis linguae. (05 Mar 2000) |
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|