grid

[grid]
noun
1.
a grating of crossed bars; gridiron.
2.
Electricity.
a.
a metallic framework employed in a storage cell or battery for conducting the electric current and supporting the active material.
b.
a system of electrical distribution serving a large area, especially by means of high-tension lines.
3.
Electronics. an electrode in a vacuum tube, usually consisting of parallel wires, a coil of wire, or a screen, for controlling the flow of electrons between the other electrodes.
4.
Surveying. a basic system of reference lines for a region, consisting of straight lines intersecting at right angles.
5.
a network of horizontal and perpendicular lines, uniformly spaced, for locating points on a map, chart, or aerial photograph by means of a system of coordinates.
6.
Architecture. a rectangular system of coordinates used in locating the principal elements of a plan.
8.
Football. gridiron ( def 1 ).

Origin:
1830–40; short for gridiron

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
grid (ɡrɪd)
 
n
1.  See gridiron
2.  a network of horizontal and vertical lines superimposed over a map, building plan, etc, for locating points
3.  a grating consisting of parallel bars
4.  the grid the national network of transmission lines, pipes, etc, by which electricity, gas, or water is distributed
5.  (NZ) short for national grid
6.  electronics Also called: control grid
 a.  screen grid See also suppressor grid an electrode situated between the cathode and anode of a valve usually consisting of a cylindrical mesh of wires, that controls the flow of electrons between cathode and anode
 b.  (as modifier): the grid bias
7.  See starting grid
8.  a plate in an accumulator that carries the active substance
9.  any interconnecting system of links: the bus service formed a grid across the country
10.  Northern English dialect word for face
 
[C19: back formation from gridiron]
 
'gridded
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

grid
1839, shortening of gridiron. City planning sense is from 1954 (hence gridlock 1980). Meaning "network of transmission lines" first recorded 1926.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
GRID
Global Resource Information Database
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences for GRIDS
Grids forming shapes other than squares are also occasionally used.
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