1. grid(n = noun.cognition) - a pattern of regularly spaced horizontal and vertical lines;
is a kind of form, pattern, shape
has particulars: reference grid, amsler grid
2. grid(n = noun.artifact) power grid, power system - a system of high tension cables by which electrical power is distributed throughout a region;
is a kind of facility, installation
is a part of base, infrastructure
has parts: electric main, power cable, power line, power plant, power station, powerhouse
3. grid(n = noun.artifact) storage-battery grid - a perforated or corrugated metal plate used in a storage battery as a conductor and support for the active material;
is a kind of plate
is a part of accumulator, storage battery
4. grid(n = noun.artifact) control grid - an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube;
is a kind of electrode
is a part of electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, tube, vacuum tube
5. grid(n = noun.artifact) gridiron - a cooking utensil of parallel metal bars; used to grill fish or meat;
is a kind of cooking utensil, cookware
1. A grating of thin parallel bars, similar to a gridiron. [1913 Webster]
2. A plate or sheet of lead with perforations, or other irregularities of surface, by which the active material of a secondary battery or accumulator is supported. [Webster 1913 Suppl.]
3. a mesh or coil of fine wire in an electron tube, connected to the circuit so as to regulate the current passing through the tube. [PJC]
4. any network of crossing horizontal and vertical lines; -- they are used, for example, as reference coordinates to locate objects or places on a map. [PJC]
5. anything resembling a grid{4}, as the Manhattan street grid. See also gridlock. [PJC]
6. a network of connected conductors for distributing electrical power, especially one using high-tension lines for wide geographic distribution of power; as, the Northeast power grid. [PJC]
7. the gridiron. [PJC]
grid, n.
1 a framework of spaced parallel bars; a grating.
2 a system of numbered squares printed on a map and forming the basis of map references.
3 a network of lines, electric-power connections, gas-supply lines, etc.
4 a pattern of lines marking the starting-places on a motor-racing track.
5 the wire network between the filament and the anode of a thermionic valve etc.
6 an arrangement of town streets in a rectangular pattern.
Idiom:
grid bias Electr. a fixed voltage applied between the cathode and the control grid of a thermionic valve which determines its operating conditions.
Derivative:
gridded adj.
Etymology:
back-form. f. GRIDIRON
cattle grid, control grid, grid metal, power grid, reference grid