Use the “Quick Search” box to locate your required term and/or definition. The following “Search conditions” can be used to refine your search: “Contains”, “Begins with”, “Ends with”, “Equals”, “Does not contain” or “Does not equal.”
Eng ID Term Definition
3921
plate
A thin, metal, plastic, or paper sheet, that carries the printing image and whose surface is treat­ed to make only the image areas ink-rece... more
A thin, metal, plastic, or paper sheet, that carries the printing image and whose surface is treat­ed to make only the image areas ink-receptive.
3922
plateau
A flat or nearly flat ELEVATION of considerable areal extent, dropping off abruptly on one or more sides; a TABLELAND.
3923
plate level
See LEVEL.
3924
platform
In geographical literature, a natural or artificial TERRACE; a flat elevated piece of GROUND; a TABLELAND, a PLATEAU. In oceanographic termi... more
In geographical literature, a natural or artificial TERRACE; a flat elevated piece of GROUND; a TABLELAND, a PLATEAU. In oceanographic terminol­ogy, any man-made structure (aircraft, ship, BUOY, or tower) from or on which oceanographic instruments are suspended or installed. Structures which are erected on or over the seabed and subsoil for the purpose of exploring for, develo­ping, removing and transporting resources therefrom.
3925
platform: mineral development
A PLATFORM used in the exploitation of minerals.
3926
platform: offshore
A permanent offshore structure, either fixed or floating, used in the production of oil or natural gas.
3927
platform: piled
A platform with a steel jacket fixed by piles to the seabed.
3928
platform jacket
The section of a platform from base to deck level, on which deck modules are fitted.
3929
plot
(v.t.). To draw lines and points to represent certain conditions graphically, as the various lines and points on a CHART or PLOTTING SHEET, ... more
(v.t.). To draw lines and points to represent certain conditions graphically, as the various lines and points on a CHART or PLOTTING SHEET, representing the progress of a craft, a graphical solution of a problem, etc.
3930
plotter
An instrument used for plotting straight lines and measuring angles on a CHART or PLOTTING SHEET. See PROTRACTOR. In data processing it stan... more
An instrument used for plotting straight lines and measuring angles on a CHART or PLOTTING SHEET. See PROTRACTOR. In data processing it stands for (a) Vector plotter: An electromechanical device for automatically drawing curves. The curves are generated by a sequence of linear incremental pieces ("vectors") depending on the resolution provided by the device. For cartographic purposes, high precision FLAT-BED PLOTTERS (drawing tables) are used. (b) Raster or electrostatic plotter: A sophisticated electronic device for producing pictures by means of raster techniques. The picture is generated by lines of PIXELS drawn sequentially, typically with a resolution of 200-400 pixels per inch. Raster plotters can produce complete pictures in short time irrespective of the complexity of the picture's contents.
3931
plotting
See PLOT.
3932
plotting board
A stiff transparent polar coordinate plotting sheet for tracking other vessels and aircraft and solving problems involv­ing RELATIVE MOVEME... more
A stiff transparent polar coordinate plotting sheet for tracking other vessels and aircraft and solving problems involv­ing RELATIVE MOVEMENT.
3933
plotting sheet
A blank CHART, usually on the MERCATOR PROJECTION, showing only the GRATICULE and a COMPASS ROSE, so that the plotting sheet can be used for... more
A blank CHART, usually on the MERCATOR PROJECTION, showing only the GRATICULE and a COMPASS ROSE, so that the plotting sheet can be used for any LONGITUDE. In hydrographic SURVEYING, a working sheet on which the main STATIONS of the SURVEY are plotted. It forms the framework of the SURVEY and provides the basis for accurately locating and plotting all the detail of the SURVEY. See also LATTICE.
3934
plotting sheet: electronic
A CHART showing time diffe­rence or phase difference curves of a circular or a hyperbolic navigational system. These LATTICE lines are used... more
A CHART showing time diffe­rence or phase difference curves of a circular or a hyperbolic navigational system. These LATTICE lines are used to accurately position the DATA collected during HYDROGRA­PHIC or OCEANOGRAPHIC SURVEYS.
3935
plumb bob
A conical device, usually of brass and suspen­ded by a cord, by means of which a point can be projec­ted vertically into space over relati... more
A conical device, usually of brass and suspen­ded by a cord, by means of which a point can be projec­ted vertically into space over relative short distan­ces. Also referred to as plummet.
3936
plumb line
The LINE OF FORCE in the geopotential field. The continuous curve to which the direction of the normal GRAVITY is everywhere tangential.
3937
plumb line: deflection of
See DEFLECTION OF THE VERTI­CAL.
3938
plumb point
See NADIR: PHOTOGRAPH.
3939
plummet
A SOUNDING LEAD. A PLUMB BOB.
3940
plunging breaker
See BREAKER.