(mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry
an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"
a line or cut across a fabric that is not at right angles to a side of the fabric
(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
at an angle; especially connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face; "a diagonal line across the page"
a lamp for providing momentary light to take a photograph
a bright patch of color used for decoration or identification; "red flashes adorned the airplane"; "a flash sewn on his sleeve indicated the unit he belonged to"
a momentary brightness
a sudden brilliant understanding; "he had a flash of intuition"
a short vivid experience; "a flash of emotion swept over him"; "the flashings of pain were a warning"
a sudden intense burst of radiant energy
appear briefly; "The headlines flashed on the screen"
emit a brief burst of light; "A shooting star flashed and was gone"
make known or cause to appear with great speed; "The latest intelligence is flashed to all command posts"
protect by covering with a thin sheet of metal; "flash the roof"
expose or show briefly; "he flashed a $100 bill"
gleam or glow intermittently; "The lights were flashing"
cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins
any of the stiff bony rods in the fin of a fish
a branch of an umbel or an umbelliform inflorescence
(mathematics) a straight line extending from a point
emit as rays; "That tower rays a laser beam for miles across the sky"