noun A rectangular array of squares or rectangles of equal size, such as in a crossword puzzle.
noun A tiling of the plane with regular polygons; a honeycomb.
noun A system for delivery of electricity, consisting of various substations, transformers and generators, connected by wire.
noun A system or structure of distributed computers working mostly on a peer-to-peer basis, used mainly to solve single and complex scientific or technical problems or to process data at high speeds (as in clusters).
noun A method of marking off maps into areas.
noun The pattern of starting positions of the drivers for a race.
noun The third (or higher) electrode of a vacuum tube (triode or higher).
noun A battery-plate somewhat like a grating, especially a zinc plate in a primary battery, or a lead plate in a secondary or storage battery.