Merriam-Webster Online Dictionary
grid (noun)1.
- grating
2.
a) (1) a perforated or ridged metal plate used as a conductor in a storage battery
(2) an electrode consisting of a mesh or a spiral of fine wire in an electron tube
(3) a network of conductors for distribution of electric power , also a network of radio or television stations
b) a network of uniformly spaced horizontal and perpendicular lines (as for locating points on a map) , also something resembling such a network - a road grid
c) - gridiron , broadly - football
3.
the starting positions of cars on a racecourse
4.
a device in a photocomposer on which are located the characters to be exposed as the text is composed
