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1. a plate or plug used to seal an aperture
2. a piece of material prepared for stamping, punching, forging, etc
3. Archery the white spot in the centre of a target
In a chemical analysis, the measured value that is obtained in the absence of a specified component of a sample and that reflects contamination from sources external to the component; it is deducted from the value obtained when the test is performed with the specified component present. Also known as analytical blank.
To cut off the electron beam of a television picture tube, camera tube, or cathode-ray oscilloscope tube during the process of retrace by applying a rectangular pulse voltage to the grid or cathode during each retrace interval. Also known as beam blank.
The result of the final cutting operation on a natural crystal.
A semifinished piece of metal to be stamped or forged into a tool or implement.
A semifinished, pressed, compacted mass of powdered metal.
Metal sheet prepared for a forming operation.
Ammunition which contains no projectile but which does contain a charge of low explosive, such as black powder, to produce a noise.